Merge remote-tracking branch 'origin/release-v0.12.0' v0.12.0

75 files changed, 2329 insertions, 834 deletions

diff --git a/synapse/__init__.py b/synapse/__init__.py
index 3e7e26bf60..5db4eae354 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -16,4 +16,4 @@
 """ This is a reference implementation of a Matrix home server.
 """
 
-__version__ = "0.11.1"
+__version__ = "0.12.0"
diff --git a/synapse/api/auth.py b/synapse/api/auth.py
index 4a13f7e2e1..adb7d64482 100644
--- a/synapse/api/auth.py
+++ b/synapse/api/auth.py
@@ -207,6 +207,13 @@ class Auth(object):
                 user_id, room_id
             ))
 
+        if membership == Membership.LEAVE:
+            forgot = yield self.store.did_forget(user_id, room_id)
+            if forgot:
+                raise AuthError(403, "User %s not in room %s" % (
+                    user_id, room_id
+                ))
+
         defer.returnValue(member)
 
     @defer.inlineCallbacks
@@ -771,7 +778,7 @@ class Auth(object):
                 if "third_party_invite" in event.content:
                     key = (
                         EventTypes.ThirdPartyInvite,
-                        event.content["third_party_invite"]["token"]
+                        event.content["third_party_invite"]["signed"]["token"]
                     )
                     third_party_invite = current_state.get(key)
                     if third_party_invite:
@@ -853,7 +860,7 @@ class Auth(object):
 
         redact_level = self._get_named_level(auth_events, "redact", 50)
 
-        if user_level > redact_level:
+        if user_level >= redact_level:
             return False
 
         redacter_domain = EventID.from_string(event.event_id).domain
diff --git a/synapse/api/errors.py b/synapse/api/errors.py
index d4037b3d55..8bc7b9e6db 100644
--- a/synapse/api/errors.py
+++ b/synapse/api/errors.py
@@ -120,6 +120,22 @@ class AuthError(SynapseError):
         super(AuthError, self).__init__(*args, **kwargs)
 
 
+class GuestAccessError(AuthError):
+    """An error raised when a there is a problem with a guest user accessing
+    a room"""
+
+    def __init__(self, rooms, *args, **kwargs):
+        self.rooms = rooms
+        super(GuestAccessError, self).__init__(*args, **kwargs)
+
+    def error_dict(self):
+        return cs_error(
+            self.msg,
+            self.errcode,
+            rooms=self.rooms,
+        )
+
+
 class EventSizeError(SynapseError):
     """An error raised when an event is too big."""
 
diff --git a/synapse/api/filtering.py b/synapse/api/filtering.py
index 18f2ec3ae8..5287aaa757 100644
--- a/synapse/api/filtering.py
+++ b/synapse/api/filtering.py
@@ -50,7 +50,7 @@ class Filtering(object):
         # many definitions.
 
         top_level_definitions = [
-            "presence"
+            "presence", "account_data"
         ]
 
         room_level_definitions = [
@@ -62,10 +62,29 @@ class Filtering(object):
                 self._check_definition(user_filter_json[key])
 
         if "room" in user_filter_json:
+            self._check_definition_room_lists(user_filter_json["room"])
             for key in room_level_definitions:
                 if key in user_filter_json["room"]:
                     self._check_definition(user_filter_json["room"][key])
 
+    def _check_definition_room_lists(self, definition):
+        """Check that "rooms" and "not_rooms" are lists of room ids if they
+        are present
+
+        Args:
+            definition(dict): The filter definition
+        Raises:
+            SynapseError: If there was a problem with this definition.
+        """
+        # check rooms are valid room IDs
+        room_id_keys = ["rooms", "not_rooms"]
+        for key in room_id_keys:
+            if key in definition:
+                if type(definition[key]) != list:
+                    raise SynapseError(400, "Expected %s to be a list." % key)
+                for room_id in definition[key]:
+                    RoomID.from_string(room_id)
+
     def _check_definition(self, definition):
         """Check if the provided definition is valid.
 
@@ -85,14 +104,7 @@ class Filtering(object):
                 400, "Expected JSON object, not %s" % (definition,)
             )
 
-        # check rooms are valid room IDs
-        room_id_keys = ["rooms", "not_rooms"]
-        for key in room_id_keys:
-            if key in definition:
-                if type(definition[key]) != list:
-                    raise SynapseError(400, "Expected %s to be a list." % key)
-                for room_id in definition[key]:
-                    RoomID.from_string(room_id)
+        self._check_definition_room_lists(definition)
 
         # check senders are valid user IDs
         user_id_keys = ["senders", "not_senders"]
@@ -119,25 +131,26 @@ class FilterCollection(object):
     def __init__(self, filter_json):
         self.filter_json = filter_json
 
-        self.room_timeline_filter = Filter(
-            self.filter_json.get("room", {}).get("timeline", {})
-        )
+        room_filter_json = self.filter_json.get("room", {})
 
-        self.room_state_filter = Filter(
-            self.filter_json.get("room", {}).get("state", {})
-        )
+        self.room_filter = Filter({
+            k: v for k, v in room_filter_json.items()
+            if k in ("rooms", "not_rooms")
+        })
 
-        self.room_ephemeral_filter = Filter(
-            self.filter_json.get("room", {}).get("ephemeral", {})
-        )
+        self.room_timeline_filter = Filter(room_filter_json.get("timeline", {}))
+        self.room_state_filter = Filter(room_filter_json.get("state", {}))
+        self.room_ephemeral_filter = Filter(room_filter_json.get("ephemeral", {}))
+        self.room_account_data = Filter(room_filter_json.get("account_data", {}))
+        self.presence_filter = Filter(self.filter_json.get("presence", {}))
+        self.account_data = Filter(self.filter_json.get("account_data", {}))
 
-        self.room_account_data = Filter(
-            self.filter_json.get("room", {}).get("account_data", {})
+        self.include_leave = self.filter_json.get("room", {}).get(
+            "include_leave", False
         )
 
-        self.presence_filter = Filter(
-            self.filter_json.get("presence", {})
-        )
+    def list_rooms(self):
+        return self.room_filter.list_rooms()
 
     def timeline_limit(self):
         return self.room_timeline_filter.limit()
@@ -151,23 +164,35 @@ class FilterCollection(object):
     def filter_presence(self, events):
         return self.presence_filter.filter(events)
 
+    def filter_account_data(self, events):
+        return self.account_data.filter(events)
+
     def filter_room_state(self, events):
-        return self.room_state_filter.filter(events)
+        return self.room_state_filter.filter(self.room_filter.filter(events))
 
     def filter_room_timeline(self, events):
-        return self.room_timeline_filter.filter(events)
+        return self.room_timeline_filter.filter(self.room_filter.filter(events))
 
     def filter_room_ephemeral(self, events):
-        return self.room_ephemeral_filter.filter(events)
+        return self.room_ephemeral_filter.filter(self.room_filter.filter(events))
 
     def filter_room_account_data(self, events):
-        return self.room_account_data.filter(events)
+        return self.room_account_data.filter(self.room_filter.filter(events))
 
 
 class Filter(object):
     def __init__(self, filter_json):
         self.filter_json = filter_json
 
+    def list_rooms(self):
+        """The list of room_id strings this filter restricts the output to
+        or None if the this filter doesn't list the room ids.
+        """
+        if "rooms" in self.filter_json:
+            return list(set(self.filter_json["rooms"]))
+        else:
+            return None
+
     def check(self, event):
         """Checks whether the filter matches the given event.
 
diff --git a/synapse/app/homeserver.py b/synapse/app/homeserver.py
index cd7a52ec07..0807def6ca 100755
--- a/synapse/app/homeserver.py
+++ b/synapse/app/homeserver.py
@@ -15,6 +15,8 @@
 # limitations under the License.
 
 import sys
+from synapse.rest import ClientRestResource
+
 sys.dont_write_bytecode = True
 from synapse.python_dependencies import (
     check_requirements, DEPENDENCY_LINKS, MissingRequirementError
@@ -53,15 +55,13 @@ from synapse.rest.key.v1.server_key_resource import LocalKey
 from synapse.rest.key.v2 import KeyApiV2Resource
 from synapse.http.matrixfederationclient import MatrixFederationHttpClient
 from synapse.api.urls import (
-    CLIENT_PREFIX, FEDERATION_PREFIX, WEB_CLIENT_PREFIX, CONTENT_REPO_PREFIX,
-    SERVER_KEY_PREFIX, MEDIA_PREFIX, CLIENT_V2_ALPHA_PREFIX, STATIC_PREFIX,
+    FEDERATION_PREFIX, WEB_CLIENT_PREFIX, CONTENT_REPO_PREFIX,
+    SERVER_KEY_PREFIX, MEDIA_PREFIX, STATIC_PREFIX,
     SERVER_KEY_V2_PREFIX,
 )
 from synapse.config.homeserver import HomeServerConfig
 from synapse.crypto import context_factory
 from synapse.util.logcontext import LoggingContext
-from synapse.rest.client.v1 import ClientV1RestResource
-from synapse.rest.client.v2_alpha import ClientV2AlphaRestResource
 from synapse.metrics.resource import MetricsResource, METRICS_PREFIX
 
 from synapse import events
@@ -92,11 +92,8 @@ class SynapseHomeServer(HomeServer):
     def build_http_client(self):
         return MatrixFederationHttpClient(self)
 
-    def build_resource_for_client(self):
-        return ClientV1RestResource(self)
-
-    def build_resource_for_client_v2_alpha(self):
-        return ClientV2AlphaRestResource(self)
+    def build_client_resource(self):
+        return ClientRestResource(self)
 
     def build_resource_for_federation(self):
         return JsonResource(self)
@@ -179,16 +176,15 @@ class SynapseHomeServer(HomeServer):
         for res in listener_config["resources"]:
             for name in res["names"]:
                 if name == "client":
+                    client_resource = self.get_client_resource()
                     if res["compress"]:
-                        client_v1 = gz_wrap(self.get_resource_for_client())
-                        client_v2 = gz_wrap(self.get_resource_for_client_v2_alpha())
-                    else:
-                        client_v1 = self.get_resource_for_client()
-                        client_v2 = self.get_resource_for_client_v2_alpha()
+                        client_resource = gz_wrap(client_resource)
 
                     resources.update({
-                        CLIENT_PREFIX: client_v1,
-                        CLIENT_V2_ALPHA_PREFIX: client_v2,
+                        "/_matrix/client/api/v1": client_resource,
+                        "/_matrix/client/r0": client_resource,
+                        "/_matrix/client/unstable": client_resource,
+                        "/_matrix/client/v2_alpha": client_resource,
                     })
 
                 if name == "federation":
@@ -499,13 +495,28 @@ class SynapseRequest(Request):
         self.start_time = int(time.time() * 1000)
 
     def finished_processing(self):
+
+        try:
+            context = LoggingContext.current_context()
+            ru_utime, ru_stime = context.get_resource_usage()
+            db_txn_count = context.db_txn_count
+            db_txn_duration = context.db_txn_duration
+        except:
+            ru_utime, ru_stime = (0, 0)
+            db_txn_count, db_txn_duration = (0, 0)
+
         self.site.access_logger.info(
             "%s - %s - {%s}"
-            " Processed request: %dms %sB %s \"%s %s %s\" \"%s\"",
+            " Processed request: %dms (%dms, %dms) (%dms/%d)"
+            " %sB %s \"%s %s %s\" \"%s\"",
             self.getClientIP(),
             self.site.site_tag,
             self.authenticated_entity,
             int(time.time() * 1000) - self.start_time,
+            int(ru_utime * 1000),
+            int(ru_stime * 1000),
+            int(db_txn_duration * 1000),
+            int(db_txn_count),
             self.sentLength,
             self.code,
             self.method,
diff --git a/synapse/config/server.py b/synapse/config/server.py
index 5c2d6bfeab..187edd516b 100644
--- a/synapse/config/server.py
+++ b/synapse/config/server.py
@@ -133,6 +133,7 @@ class ServerConfig(Config):
         # The domain name of the server, with optional explicit port.
         # This is used by remote servers to connect to this server,
         # e.g. matrix.org, localhost:8080, etc.
+        # This is also the last part of your UserID.
         server_name: "%(server_name)s"
 
         # When running as a daemon, the file to store the pid in
diff --git a/synapse/crypto/keyring.py b/synapse/crypto/keyring.py
index bc5bb5cdb1..1fea568eed 100644
--- a/synapse/crypto/keyring.py
+++ b/synapse/crypto/keyring.py
@@ -230,7 +230,9 @@ class Keyring(object):
 
             missing_keys = {}
             for group in group_id_to_group.values():
-                missing_keys.setdefault(group.server_name, set()).union(group.key_ids)
+                missing_keys.setdefault(group.server_name, set()).update(
+                    group.key_ids
+                )
 
             for fn in key_fetch_fns:
                 results = yield fn(missing_keys.items())
diff --git a/synapse/events/utils.py b/synapse/events/utils.py
index 44cc1ef132..e634b149ba 100644
--- a/synapse/events/utils.py
+++ b/synapse/events/utils.py
@@ -100,22 +100,20 @@ def format_event_raw(d):
 
 
 def format_event_for_client_v1(d):
-    d["user_id"] = d.pop("sender", None)
+    d = format_event_for_client_v2(d)
+
+    sender = d.get("sender")
+    if sender is not None:
+        d["user_id"] = sender
 
-    move_keys = (
+    copy_keys = (
         "age", "redacted_because", "replaces_state", "prev_content",
         "invite_room_state",
     )
-    for key in move_keys:
+    for key in copy_keys:
         if key in d["unsigned"]:
             d[key] = d["unsigned"][key]
 
-    drop_keys = (
-        "auth_events", "prev_events", "hashes", "signatures", "depth",
-        "unsigned", "origin", "prev_state"
-    )
-    for key in drop_keys:
-        d.pop(key, None)
     return d
 
 
diff --git a/synapse/federation/transport/server.py b/synapse/federation/transport/server.py
index 127b4da4f8..6b164fd2d1 100644
--- a/synapse/federation/transport/server.py
+++ b/synapse/federation/transport/server.py
@@ -165,7 +165,7 @@ class BaseFederationServlet(object):
             if code is None:
                 continue
 
-            server.register_path(method, pattern, self._wrap(code))
+            server.register_paths(method, (pattern,), self._wrap(code))
 
 
 class FederationSendServlet(BaseFederationServlet):
diff --git a/synapse/handlers/_base.py b/synapse/handlers/_base.py
index 6519f183df..5fd20285d2 100644
--- a/synapse/handlers/_base.py
+++ b/synapse/handlers/_base.py
@@ -92,7 +92,15 @@ class BaseHandler(object):
 
             membership_event = state.get((EventTypes.Member, user_id), None)
             if membership_event:
-                membership = membership_event.membership
+                was_forgotten_at_event = yield self.store.was_forgotten_at(
+                    membership_event.state_key,
+                    membership_event.room_id,
+                    membership_event.event_id
+                )
+                if was_forgotten_at_event:
+                    membership = None
+                else:
+                    membership = membership_event.membership
             else:
                 membership = None
 
diff --git a/synapse/handlers/account_data.py b/synapse/handlers/account_data.py
index 1d35d3b7dc..fe773bee9b 100644
--- a/synapse/handlers/account_data.py
+++ b/synapse/handlers/account_data.py
@@ -29,9 +29,10 @@ class AccountDataEventSource(object):
         last_stream_id = from_key
 
         current_stream_id = yield self.store.get_max_account_data_stream_id()
-        tags = yield self.store.get_updated_tags(user_id, last_stream_id)
 
         results = []
+        tags = yield self.store.get_updated_tags(user_id, last_stream_id)
+
         for room_id, room_tags in tags.items():
             results.append({
                 "type": "m.tag",
@@ -39,6 +40,24 @@ class AccountDataEventSource(object):
                 "room_id": room_id,
             })
 
+        account_data, room_account_data = (
+            yield self.store.get_updated_account_data_for_user(user_id, last_stream_id)
+        )
+
+        for account_data_type, content in account_data.items():
+            results.append({
+                "type": account_data_type,
+                "content": content,
+            })
+
+        for room_id, account_data in room_account_data.items():
+            for account_data_type, content in account_data.items():
+                results.append({
+                    "type": account_data_type,
+                    "content": content,
+                    "room_id": room_id,
+                })
+
         defer.returnValue((results, current_stream_id))
 
     @defer.inlineCallbacks
diff --git a/synapse/handlers/admin.py b/synapse/handlers/admin.py
index d852a18555..04fa58df65 100644
--- a/synapse/handlers/admin.py
+++ b/synapse/handlers/admin.py
@@ -30,34 +30,27 @@ class AdminHandler(BaseHandler):
 
     @defer.inlineCallbacks
     def get_whois(self, user):
-        res = yield self.store.get_user_ip_and_agents(user)
-
-        d = {}
-        for r in res:
-            # Note that device_id is always None
-            device = d.setdefault(r["device_id"], {})
-            session = device.setdefault(r["access_token"], [])
-            session.append({
-                "ip": r["ip"],
-                "user_agent": r["user_agent"],
-                "last_seen": r["last_seen"],
+        connections = []
+
+        sessions = yield self.store.get_user_ip_and_agents(user)
+        for session in sessions:
+            connections.append({
+                "ip": session["ip"],
+                "last_seen": session["last_seen"],
+                "user_agent": session["user_agent"],
             })
 
         ret = {
             "user_id": user.to_string(),
-            "devices": [
-                {
-                    "device_id": k,
+            "devices": {
+                "": {
                     "sessions": [
                         {
-                            # "access_token": x, TODO (erikj)
-                            "connections": y,
+                            "connections": connections,
                         }
-                        for x, y in v.items()
                     ]
-                }
-                for k, v in d.items()
-            ],
+                },
+            },
         }
 
         defer.returnValue(ret)
diff --git a/synapse/handlers/events.py b/synapse/handlers/events.py
index 0e4c0d4d06..576d77e0e7 100644
--- a/synapse/handlers/events.py
+++ b/synapse/handlers/events.py
@@ -28,6 +28,18 @@ import random
 logger = logging.getLogger(__name__)
 
 
+def started_user_eventstream(distributor, user):
+    return distributor.fire("started_user_eventstream", user)
+
+
+def stopped_user_eventstream(distributor, user):
+    return distributor.fire("stopped_user_eventstream", user)
+
+
+def user_joined_room(distributor, user, room_id):
+    return distributor.fire("user_joined_room", user, room_id)
+
+
 class EventStreamHandler(BaseHandler):
 
     def __init__(self, hs):
@@ -57,7 +69,12 @@ class EventStreamHandler(BaseHandler):
             A deferred that completes once their presence has been updated.
         """
         if user not in self._streams_per_user:
-            self._streams_per_user[user] = 0
+            # Make sure we set the streams per user to 1 here rather than
+            # setting it to zero and incrementing the value below.
+            # Otherwise this may race with stopped_stream causing the
+            # user to be erased from the map before we have a chance
+            # to increment it.
+            self._streams_per_user[user] = 1
             if user in self._stop_timer_per_user:
                 try:
                     self.clock.cancel_call_later(
@@ -66,9 +83,9 @@ class EventStreamHandler(BaseHandler):
                 except:
                     logger.exception("Failed to cancel event timer")
             else:
-                yield self.distributor.fire("started_user_eventstream", user)
-
-        self._streams_per_user[user] += 1
+                yield started_user_eventstream(self.distributor, user)
+        else:
+            self._streams_per_user[user] += 1
 
     def stopped_stream(self, user):
         """If there are no streams for a user this starts a timer that will
@@ -89,7 +106,7 @@ class EventStreamHandler(BaseHandler):
 
                 self._stop_timer_per_user.pop(user, None)
 
-                return self.distributor.fire("stopped_user_eventstream", user)
+                return stopped_user_eventstream(self.distributor, user)
 
             logger.debug("Scheduling _later: for %s", user)
             self._stop_timer_per_user[user] = (
@@ -120,9 +137,7 @@ class EventStreamHandler(BaseHandler):
                 timeout = random.randint(int(timeout*0.9), int(timeout*1.1))
 
             if is_guest:
-                yield self.distributor.fire(
-                    "user_joined_room", user=auth_user, room_id=room_id
-                )
+                yield user_joined_room(self.distributor, auth_user, room_id)
 
             events, tokens = yield self.notifier.get_events_for(
                 auth_user, pagin_config, timeout,
diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index c1bce07e31..28f2ff68d6 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -44,6 +44,10 @@ import logging
 logger = logging.getLogger(__name__)
 
 
+def user_joined_room(distributor, user, room_id):
+    return distributor.fire("user_joined_room", user, room_id)
+
+
 class FederationHandler(BaseHandler):
     """Handles events that originated from federation.
         Responsible for:
@@ -60,10 +64,7 @@ class FederationHandler(BaseHandler):
 
         self.hs = hs
 
-        self.distributor.observe(
-            "user_joined_room",
-            self._on_user_joined
-        )
+        self.distributor.observe("user_joined_room", self.user_joined_room)
 
         self.waiting_for_join_list = {}
 
@@ -176,7 +177,7 @@ class FederationHandler(BaseHandler):
                 )
 
             try:
-                _, event_stream_id, max_stream_id = yield self._handle_new_event(
+                context, event_stream_id, max_stream_id = yield self._handle_new_event(
                     origin,
                     event,
                     state=state,
@@ -233,10 +234,13 @@ class FederationHandler(BaseHandler):
 
         if event.type == EventTypes.Member:
             if event.membership == Membership.JOIN:
-                user = UserID.from_string(event.state_key)
-                yield self.distributor.fire(
-                    "user_joined_room", user=user, room_id=event.room_id
-                )
+                prev_state = context.current_state.get((event.type, event.state_key))
+                if not prev_state or prev_state.membership != Membership.JOIN:
+                    # Only fire user_joined_room if the user has acutally
+                    # joined the room. Don't bother if the user is just
+                    # changing their profile info.
+                    user = UserID.from_string(event.state_key)
+                    yield user_joined_room(self.distributor, user, event.room_id)
 
     @defer.inlineCallbacks
     def _filter_events_for_server(self, server_name, room_id, events):
@@ -592,7 +596,7 @@ class FederationHandler(BaseHandler):
         handled_events = set()
 
         try:
-            new_event = self._sign_event(event)
+            event = self._sign_event(event)
             # Try the host we successfully got a response to /make_join/
             # request first.
             try:
@@ -600,7 +604,7 @@ class FederationHandler(BaseHandler):
                 target_hosts.insert(0, origin)
             except ValueError:
                 pass
-            ret = yield self.replication_layer.send_join(target_hosts, new_event)
+            ret = yield self.replication_layer.send_join(target_hosts, event)
 
             origin = ret["origin"]
             state = ret["state"]
@@ -609,12 +613,12 @@ class FederationHandler(BaseHandler):
 
             handled_events.update([s.event_id for s in state])
             handled_events.update([a.event_id for a in auth_chain])
-            handled_events.add(new_event.event_id)
+            handled_events.add(event.event_id)
 
             logger.debug("do_invite_join auth_chain: %s", auth_chain)
             logger.debug("do_invite_join state: %s", state)
 
-            logger.debug("do_invite_join event: %s", new_event)
+            logger.debug("do_invite_join event: %s", event)
 
             try:
                 yield self.store.store_room(
@@ -632,14 +636,14 @@ class FederationHandler(BaseHandler):
 
             with PreserveLoggingContext():
                 d = self.notifier.on_new_room_event(
-                    new_event, event_stream_id, max_stream_id,
+                    event, event_stream_id, max_stream_id,
                     extra_users=[joinee]
                 )
 
             def log_failure(f):
                 logger.warn(
                     "Failed to notify about %s: %s",
-                    new_event.event_id, f.value
+                    event.event_id, f.value
                 )
 
             d.addErrback(log_failure)
@@ -733,9 +737,7 @@ class FederationHandler(BaseHandler):
         if event.type == EventTypes.Member:
             if event.content["membership"] == Membership.JOIN:
                 user = UserID.from_string(event.state_key)
-                yield self.distributor.fire(
-                    "user_joined_room", user=user, room_id=event.room_id
-                )
+                yield user_joined_room(self.distributor, user, event.room_id)
 
         new_pdu = event
 
@@ -1082,7 +1084,7 @@ class FederationHandler(BaseHandler):
         return self.store.get_min_depth(context)
 
     @log_function
-    def _on_user_joined(self, user, room_id):
+    def user_joined_room(self, user, room_id):
         waiters = self.waiting_for_join_list.get(
             (user.to_string(), room_id),
             []
@@ -1648,11 +1650,22 @@ class FederationHandler(BaseHandler):
         sender = invite["sender"]
         room_id = invite["room_id"]
 
+        if "signed" not in invite or "token" not in invite["signed"]:
+            logger.info(
+                "Discarding received notification of third party invite "
+                "without signed: %s" % (invite,)
+            )
+            return
+
+        third_party_invite = {
+            "signed": invite["signed"],
+        }
+
         event_dict = {
             "type": EventTypes.Member,
             "content": {
                 "membership": Membership.INVITE,
-                "third_party_invite": invite,
+                "third_party_invite": third_party_invite,
             },
             "room_id": room_id,
             "sender": sender,
@@ -1663,6 +1676,11 @@ class FederationHandler(BaseHandler):
             builder = self.event_builder_factory.new(event_dict)
             EventValidator().validate_new(builder)
             event, context = yield self._create_new_client_event(builder=builder)
+
+            event, context = yield self.add_display_name_to_third_party_invite(
+                event_dict, event, context
+            )
+
             self.auth.check(event, context.current_state)
             yield self._validate_keyserver(event, auth_events=context.current_state)
             member_handler = self.hs.get_handlers().room_member_handler
@@ -1684,6 +1702,10 @@ class FederationHandler(BaseHandler):
             builder=builder,
         )
 
+        event, context = yield self.add_display_name_to_third_party_invite(
+            event_dict, event, context
+        )
+
         self.auth.check(event, auth_events=context.current_state)
         yield self._validate_keyserver(event, auth_events=context.current_state)
 
@@ -1694,6 +1716,27 @@ class FederationHandler(BaseHandler):
         yield member_handler.change_membership(event, context)
 
     @defer.inlineCallbacks
+    def add_display_name_to_third_party_invite(self, event_dict, event, context):
+        key = (
+            EventTypes.ThirdPartyInvite,
+            event.content["third_party_invite"]["signed"]["token"]
+        )
+        original_invite = context.current_state.get(key)
+        if not original_invite:
+            logger.info(
+                "Could not find invite event for third_party_invite - "
+                "discarding: %s" % (event_dict,)
+            )
+            return
+
+        display_name = original_invite.content["display_name"]
+        event_dict["content"]["third_party_invite"]["display_name"] = display_name
+        builder = self.event_builder_factory.new(event_dict)
+        EventValidator().validate_new(builder)
+        event, context = yield self._create_new_client_event(builder=builder)
+        defer.returnValue((event, context))
+
+    @defer.inlineCallbacks
     def _validate_keyserver(self, event, auth_events):
         token = event.content["third_party_invite"]["signed"]["token"]
 
diff --git a/synapse/handlers/identity.py b/synapse/handlers/identity.py
index 2a99921d5f..f1fa562fff 100644
--- a/synapse/handlers/identity.py
+++ b/synapse/handlers/identity.py
@@ -20,7 +20,6 @@ from synapse.api.errors import (
     CodeMessageException
 )
 from ._base import BaseHandler
-from synapse.http.client import SimpleHttpClient
 from synapse.util.async import run_on_reactor
 from synapse.api.errors import SynapseError
 
@@ -35,13 +34,12 @@ class IdentityHandler(BaseHandler):
     def __init__(self, hs):
         super(IdentityHandler, self).__init__(hs)
 
+        self.http_client = hs.get_simple_http_client()
+
     @defer.inlineCallbacks
     def threepid_from_creds(self, creds):
         yield run_on_reactor()
 
-        # TODO: get this from the homeserver rather than creating a new one for
-        # each request
-        http_client = SimpleHttpClient(self.hs)
         # XXX: make this configurable!
         # trustedIdServers = ['matrix.org', 'localhost:8090']
         trustedIdServers = ['matrix.org', 'vector.im']
@@ -67,7 +65,7 @@ class IdentityHandler(BaseHandler):
 
         data = {}
         try:
-            data = yield http_client.get_json(
+            data = yield self.http_client.get_json(
                 "https://%s%s" % (
                     id_server,
                     "/_matrix/identity/api/v1/3pid/getValidated3pid"
@@ -85,7 +83,6 @@ class IdentityHandler(BaseHandler):
     def bind_threepid(self, creds, mxid):
         yield run_on_reactor()
         logger.debug("binding threepid %r to %s", creds, mxid)
-        http_client = SimpleHttpClient(self.hs)
         data = None
 
         if 'id_server' in creds:
@@ -103,7 +100,7 @@ class IdentityHandler(BaseHandler):
             raise SynapseError(400, "No client_secret in creds")
 
         try:
-            data = yield http_client.post_urlencoded_get_json(
+            data = yield self.http_client.post_urlencoded_get_json(
                 "https://%s%s" % (
                     id_server, "/_matrix/identity/api/v1/3pid/bind"
                 ),
@@ -121,7 +118,6 @@ class IdentityHandler(BaseHandler):
     @defer.inlineCallbacks
     def requestEmailToken(self, id_server, email, client_secret, send_attempt, **kwargs):
         yield run_on_reactor()
-        http_client = SimpleHttpClient(self.hs)
 
         params = {
             'email': email,
@@ -131,7 +127,7 @@ class IdentityHandler(BaseHandler):
         params.update(kwargs)
 
         try:
-            data = yield http_client.post_urlencoded_get_json(
+            data = yield self.http_client.post_urlencoded_get_json(
                 "https://%s%s" % (
                     id_server,
                     "/_matrix/identity/api/v1/validate/email/requestToken"
diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py
index 2e7d0d7f82..a1bed9b0dc 100644
--- a/synapse/handlers/message.py
+++ b/synapse/handlers/message.py
@@ -22,15 +22,22 @@ from synapse.events.utils import serialize_event
 from synapse.events.validator import EventValidator
 from synapse.util import unwrapFirstError
 from synapse.util.logcontext import PreserveLoggingContext
+from synapse.util.caches.snapshot_cache import SnapshotCache
 from synapse.types import UserID, RoomStreamToken, StreamToken
 
 from ._base import BaseHandler
 
+from canonicaljson import encode_canonical_json
+
 import logging
 
 logger = logging.getLogger(__name__)
 
 
+def collect_presencelike_data(distributor, user, content):
+    return distributor.fire("collect_presencelike_data", user, content)
+
+
 class MessageHandler(BaseHandler):
 
     def __init__(self, hs):
@@ -39,6 +46,7 @@ class MessageHandler(BaseHandler):
         self.state = hs.get_state_handler()
         self.clock = hs.get_clock()
         self.validator = EventValidator()
+        self.snapshot_cache = SnapshotCache()
 
     @defer.inlineCallbacks
     def get_message(self, msg_id=None, room_id=None, sender_id=None,
@@ -195,10 +203,8 @@ class MessageHandler(BaseHandler):
             if membership == Membership.JOIN:
                 joinee = UserID.from_string(builder.state_key)
                 # If event doesn't include a display name, add one.
-                yield self.distributor.fire(
-                    "collect_presencelike_data",
-                    joinee,
-                    builder.content
+                yield collect_presencelike_data(
+                    self.distributor, joinee, builder.content
                 )
 
         if token_id is not None:
@@ -211,6 +217,16 @@ class MessageHandler(BaseHandler):
             builder=builder,
         )
 
+        if event.is_state():
+            prev_state = context.current_state.get((event.type, event.state_key))
+            if prev_state and event.user_id == prev_state.user_id:
+                prev_content = encode_canonical_json(prev_state.content)
+                next_content = encode_canonical_json(event.content)
+                if prev_content == next_content:
+                    # Duplicate suppression for state updates with same sender
+                    # and content.
+                    defer.returnValue(prev_state)
+
         if event.type == EventTypes.Member:
             member_handler = self.hs.get_handlers().room_member_handler
             yield member_handler.change_membership(event, context, is_guest=is_guest)
@@ -312,7 +328,6 @@ class MessageHandler(BaseHandler):
             [serialize_event(c, now) for c in room_state.values()]
         )
 
-    @defer.inlineCallbacks
     def snapshot_all_rooms(self, user_id=None, pagin_config=None,
                            as_client_event=True, include_archived=False):
         """Retrieve a snapshot of all rooms the user is invited or has joined.
@@ -332,6 +347,28 @@ class MessageHandler(BaseHandler):
             is joined on, may return a "messages" key with messages, depending
             on the specified PaginationConfig.
         """
+        key = (
+            user_id,
+            pagin_config.from_token,
+            pagin_config.to_token,
+            pagin_config.direction,
+            pagin_config.limit,
+            as_client_event,
+            include_archived,
+        )
+        now_ms = self.clock.time_msec()
+        result = self.snapshot_cache.get(now_ms, key)
+        if result is not None:
+            return result
+
+        return self.snapshot_cache.set(now_ms, key, self._snapshot_all_rooms(
+            user_id, pagin_config, as_client_event, include_archived
+        ))
+
+    @defer.inlineCallbacks
+    def _snapshot_all_rooms(self, user_id=None, pagin_config=None,
+                            as_client_event=True, include_archived=False):
+
         memberships = [Membership.INVITE, Membership.JOIN]
         if include_archived:
             memberships.append(Membership.LEAVE)
@@ -359,6 +396,10 @@ class MessageHandler(BaseHandler):
 
         tags_by_room = yield self.store.get_tags_for_user(user_id)
 
+        account_data, account_data_by_room = (
+            yield self.store.get_account_data_for_user(user_id)
+        )
+
         public_room_ids = yield self.store.get_public_room_ids()
 
         limit = pagin_config.limit
@@ -436,14 +477,22 @@ class MessageHandler(BaseHandler):
                     for c in current_state.values()
                 ]
 
-                account_data = []
+                account_data_events = []
                 tags = tags_by_room.get(event.room_id)
                 if tags:
-                    account_data.append({
+                    account_data_events.append({
                         "type": "m.tag",
                         "content": {"tags": tags},
                     })
-                d["account_data"] = account_data
+
+                account_data = account_data_by_room.get(event.room_id, {})
+                for account_data_type, content in account_data.items():
+                    account_data_events.append({
+                        "type": account_data_type,
+                        "content": content,
+                    })
+
+                d["account_data"] = account_data_events
             except:
                 logger.exception("Failed to get snapshot")
 
@@ -456,9 +505,17 @@ class MessageHandler(BaseHandler):
                 consumeErrors=True
             ).addErrback(unwrapFirstError)
 
+        account_data_events = []
+        for account_data_type, content in account_data.items():
+            account_data_events.append({
+                "type": account_data_type,
+                "content": content,
+            })
+
         ret = {
             "rooms": rooms_ret,
             "presence": presence,
+            "account_data": account_data_events,
             "receipts": receipt,
             "end": now_token.to_string(),
         }
@@ -498,14 +555,22 @@ class MessageHandler(BaseHandler):
                 user_id, room_id, pagin_config, membership, member_event_id, is_guest
             )
 
-        account_data = []
+        account_data_events = []
         tags = yield self.store.get_tags_for_room(user_id, room_id)
         if tags:
-            account_data.append({
+            account_data_events.append({
                 "type": "m.tag",
                 "content": {"tags": tags},
             })
-        result["account_data"] = account_data
+
+        account_data = yield self.store.get_account_data_for_room(user_id, room_id)
+        for account_data_type, content in account_data.items():
+            account_data_events.append({
+                "type": account_data_type,
+                "content": content,
+            })
+
+        result["account_data"] = account_data_events
 
         defer.returnValue(result)
 
@@ -588,23 +653,28 @@ class MessageHandler(BaseHandler):
 
         @defer.inlineCallbacks
         def get_presence():
-            states = {}
-            if not is_guest:
-                states = yield presence_handler.get_states(
-                    target_users=[UserID.from_string(m.user_id) for m in room_members],
-                    auth_user=auth_user,
-                    as_event=True,
-                    check_auth=False,
-                )
+            states = yield presence_handler.get_states(
+                target_users=[UserID.from_string(m.user_id) for m in room_members],
+                auth_user=auth_user,
+                as_event=True,
+                check_auth=False,
+            )
 
             defer.returnValue(states.values())
 
-        receipts_handler = self.hs.get_handlers().receipts_handler
+        @defer.inlineCallbacks
+        def get_receipts():
+            receipts_handler = self.hs.get_handlers().receipts_handler
+            receipts = yield receipts_handler.get_receipts_for_room(
+                room_id,
+                now_token.receipt_key
+            )
+            defer.returnValue(receipts)
 
         presence, receipts, (messages, token) = yield defer.gatherResults(
             [
                 get_presence(),
-                receipts_handler.get_receipts_for_room(room_id, now_token.receipt_key),
+                get_receipts(),
                 self.store.get_recent_events_for_room(
                     room_id,
                     limit=limit,
diff --git a/synapse/handlers/presence.py b/synapse/handlers/presence.py
index aca65096fc..63d6f30a7b 100644
--- a/synapse/handlers/presence.py
+++ b/synapse/handlers/presence.py
@@ -62,6 +62,14 @@ def partitionbool(l, func):
     return ret.get(True, []), ret.get(False, [])
 
 
+def user_presence_changed(distributor, user, statuscache):
+    return distributor.fire("user_presence_changed", user, statuscache)
+
+
+def collect_presencelike_data(distributor, user, content):
+    return distributor.fire("collect_presencelike_data", user, content)
+
+
 class PresenceHandler(BaseHandler):
 
     STATE_LEVELS = {
@@ -361,9 +369,7 @@ class PresenceHandler(BaseHandler):
         yield self.store.set_presence_state(
             target_user.localpart, state_to_store
         )
-        yield self.distributor.fire(
-            "collect_presencelike_data", target_user, state
-        )
+        yield collect_presencelike_data(self.distributor, target_user, state)
 
         if now_level > was_level:
             state["last_active"] = self.clock.time_msec()
@@ -467,7 +473,7 @@ class PresenceHandler(BaseHandler):
             )
 
     @defer.inlineCallbacks
-    def send_invite(self, observer_user, observed_user):
+    def send_presence_invite(self, observer_user, observed_user):
         """Request the presence of a local or remote user for a local user"""
         if not self.hs.is_mine(observer_user):
             raise SynapseError(400, "User is not hosted on this Home Server")
@@ -878,7 +884,7 @@ class PresenceHandler(BaseHandler):
             room_ids=room_ids,
             statuscache=statuscache,
         )
-        yield self.distributor.fire("user_presence_changed", user, statuscache)
+        yield user_presence_changed(self.distributor, user, statuscache)
 
     @defer.inlineCallbacks
     def incoming_presence(self, origin, content):
@@ -1116,9 +1122,7 @@ class PresenceHandler(BaseHandler):
                     self._user_cachemap[user].get_state()["last_active"]
                 )
 
-            yield self.distributor.fire(
-                "collect_presencelike_data", user, state
-            )
+            yield collect_presencelike_data(self.distributor, user, state)
 
         if "last_active" in state:
             state = dict(state)
diff --git a/synapse/handlers/profile.py b/synapse/handlers/profile.py
index 799faffe53..576c6f09b4 100644
--- a/synapse/handlers/profile.py
+++ b/synapse/handlers/profile.py
@@ -28,6 +28,14 @@ import logging
 logger = logging.getLogger(__name__)
 
 
+def changed_presencelike_data(distributor, user, state):
+    return distributor.fire("changed_presencelike_data", user, state)
+
+
+def collect_presencelike_data(distributor, user, content):
+    return distributor.fire("collect_presencelike_data", user, content)
+
+
 class ProfileHandler(BaseHandler):
 
     def __init__(self, hs):
@@ -95,11 +103,9 @@ class ProfileHandler(BaseHandler):
             target_user.localpart, new_displayname
         )
 
-        yield self.distributor.fire(
-            "changed_presencelike_data", target_user, {
-                "displayname": new_displayname,
-            }
-        )
+        yield changed_presencelike_data(self.distributor, target_user, {
+            "displayname": new_displayname,
+        })
 
         yield self._update_join_states(target_user)
 
@@ -144,11 +150,9 @@ class ProfileHandler(BaseHandler):
             target_user.localpart, new_avatar_url
         )
 
-        yield self.distributor.fire(
-            "changed_presencelike_data", target_user, {
-                "avatar_url": new_avatar_url,
-            }
-        )
+        yield changed_presencelike_data(self.distributor, target_user, {
+            "avatar_url": new_avatar_url,
+        })
 
         yield self._update_join_states(target_user)
 
@@ -208,9 +212,7 @@ class ProfileHandler(BaseHandler):
                 "membership": Membership.JOIN,
             }
 
-            yield self.distributor.fire(
-                "collect_presencelike_data", user, content
-            )
+            yield collect_presencelike_data(self.distributor, user, content)
 
             msg_handler = self.hs.get_handlers().message_handler
             try:
diff --git a/synapse/handlers/register.py b/synapse/handlers/register.py
index 493a087031..baf7c14e40 100644
--- a/synapse/handlers/register.py
+++ b/synapse/handlers/register.py
@@ -31,6 +31,10 @@ import urllib
 logger = logging.getLogger(__name__)
 
 
+def registered_user(distributor, user):
+    return distributor.fire("registered_user", user)
+
+
 class RegistrationHandler(BaseHandler):
 
     def __init__(self, hs):
@@ -38,6 +42,7 @@ class RegistrationHandler(BaseHandler):
 
         self.distributor = hs.get_distributor()
         self.distributor.declare("registered_user")
+        self.captcha_client = CaptchaServerHttpClient(hs)
 
     @defer.inlineCallbacks
     def check_username(self, localpart):
@@ -98,7 +103,7 @@ class RegistrationHandler(BaseHandler):
                 password_hash=password_hash
             )
 
-            yield self.distributor.fire("registered_user", user)
+            yield registered_user(self.distributor, user)
         else:
             # autogen a random user ID
             attempts = 0
@@ -117,7 +122,7 @@ class RegistrationHandler(BaseHandler):
                         token=token,
                         password_hash=password_hash)
 
-                    self.distributor.fire("registered_user", user)
+                    yield registered_user(self.distributor, user)
                 except SynapseError:
                     # if user id is taken, just generate another
                     user_id = None
@@ -127,25 +132,9 @@ class RegistrationHandler(BaseHandler):
                         raise RegistrationError(
                             500, "Cannot generate user ID.")
 
-        # create a default avatar for the user
-        # XXX: ideally clients would explicitly specify one, but given they don't
-        # and we want consistent and pretty identicons for random users, we'll
-        # do it here.
-        try:
-            auth_user = UserID.from_string(user_id)
-            media_repository = self.hs.get_resource_for_media_repository()
-            identicon_resource = media_repository.getChildWithDefault("identicon", None)
-            upload_resource = media_repository.getChildWithDefault("upload", None)
-            identicon_bytes = identicon_resource.generate_identicon(user_id, 320, 320)
-            content_uri = yield upload_resource.create_content(
-                "image/png", None, identicon_bytes, len(identicon_bytes), auth_user
-            )
-            profile_handler = self.hs.get_handlers().profile_handler
-            profile_handler.set_avatar_url(
-                auth_user, auth_user, ("%s#auto" % (content_uri,))
-            )
-        except NotImplementedError:
-            pass  # make tests pass without messing around creating default avatars
+        # We used to generate default identicons here, but nowadays
+        # we want clients to generate their own as part of their branding
+        # rather than there being consistent matrix-wide ones, so we don't.
 
         defer.returnValue((user_id, token))
 
@@ -167,7 +156,7 @@ class RegistrationHandler(BaseHandler):
             token=token,
             password_hash=""
         )
-        self.distributor.fire("registered_user", user)
+        registered_user(self.distributor, user)
         defer.returnValue((user_id, token))
 
     @defer.inlineCallbacks
@@ -215,7 +204,7 @@ class RegistrationHandler(BaseHandler):
                 token=token,
                 password_hash=None
             )
-            yield self.distributor.fire("registered_user", user)
+            yield registered_user(self.distributor, user)
         except Exception, e:
             yield self.store.add_access_token_to_user(user_id, token)
             # Ignore Registration errors
@@ -302,10 +291,7 @@ class RegistrationHandler(BaseHandler):
         """
         Used only by c/s api v1
         """
-        # TODO: get this from the homeserver rather than creating a new one for
-        # each request
-        client = CaptchaServerHttpClient(self.hs)
-        data = yield client.post_urlencoded_get_raw(
+        data = yield self.captcha_client.post_urlencoded_get_raw(
             "http://www.google.com:80/recaptcha/api/verify",
             args={
                 'privatekey': private_key,
diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py
index 3f04752581..13f66e0df0 100644
--- a/synapse/handlers/room.py
+++ b/synapse/handlers/room.py
@@ -41,6 +41,18 @@ logger = logging.getLogger(__name__)
 id_server_scheme = "https://"
 
 
+def collect_presencelike_data(distributor, user, content):
+    return distributor.fire("collect_presencelike_data", user, content)
+
+
+def user_left_room(distributor, user, room_id):
+    return distributor.fire("user_left_room", user=user, room_id=room_id)
+
+
+def user_joined_room(distributor, user, room_id):
+    return distributor.fire("user_joined_room", user=user, room_id=room_id)
+
+
 class RoomCreationHandler(BaseHandler):
 
     PRESETS_DICT = {
@@ -438,9 +450,7 @@ class RoomMemberHandler(BaseHandler):
 
             if prev_state and prev_state.membership == Membership.JOIN:
                 user = UserID.from_string(event.user_id)
-                self.distributor.fire(
-                    "user_left_room", user=user, room_id=event.room_id
-                )
+                user_left_room(self.distributor, user, event.room_id)
 
         defer.returnValue({"room_id": room_id})
 
@@ -458,9 +468,7 @@ class RoomMemberHandler(BaseHandler):
             raise SynapseError(404, "No known servers")
 
         # If event doesn't include a display name, add one.
-        yield self.distributor.fire(
-            "collect_presencelike_data", joinee, content
-        )
+        yield collect_presencelike_data(self.distributor, joinee, content)
 
         content.update({"membership": Membership.JOIN})
         builder = self.event_builder_factory.new({
@@ -517,10 +525,13 @@ class RoomMemberHandler(BaseHandler):
                 do_auth=do_auth,
             )
 
-        user = UserID.from_string(event.user_id)
-        yield self.distributor.fire(
-            "user_joined_room", user=user, room_id=room_id
-        )
+        prev_state = context.current_state.get((event.type, event.state_key))
+        if not prev_state or prev_state.membership != Membership.JOIN:
+            # Only fire user_joined_room if the user has acutally joined the
+            # room. Don't bother if the user is just changing their profile
+            # info.
+            user = UserID.from_string(event.user_id)
+            yield user_joined_room(self.distributor, user, room_id)
 
     @defer.inlineCallbacks
     def get_inviter(self, event):
@@ -693,13 +704,48 @@ class RoomMemberHandler(BaseHandler):
             token_id,
             txn_id
     ):
+        room_state = yield self.hs.get_state_handler().get_current_state(room_id)
+
+        inviter_display_name = ""
+        inviter_avatar_url = ""
+        member_event = room_state.get((EventTypes.Member, user.to_string()))
+        if member_event:
+            inviter_display_name = member_event.content.get("displayname", "")
+            inviter_avatar_url = member_event.content.get("avatar_url", "")
+
+        canonical_room_alias = ""
+        canonical_alias_event = room_state.get((EventTypes.CanonicalAlias, ""))
+        if canonical_alias_event:
+            canonical_room_alias = canonical_alias_event.content.get("alias", "")
+
+        room_name = ""
+        room_name_event = room_state.get((EventTypes.Name, ""))
+        if room_name_event:
+            room_name = room_name_event.content.get("name", "")
+
+        room_join_rules = ""
+        join_rules_event = room_state.get((EventTypes.JoinRules, ""))
+        if join_rules_event:
+            room_join_rules = join_rules_event.content.get("join_rule", "")
+
+        room_avatar_url = ""
+        room_avatar_event = room_state.get((EventTypes.RoomAvatar, ""))
+        if room_avatar_event:
+            room_avatar_url = room_avatar_event.content.get("url", "")
+
         token, public_key, key_validity_url, display_name = (
             yield self._ask_id_server_for_third_party_invite(
-                id_server,
-                medium,
-                address,
-                room_id,
-                user.to_string()
+                id_server=id_server,
+                medium=medium,
+                address=address,
+                room_id=room_id,
+                inviter_user_id=user.to_string(),
+                room_alias=canonical_room_alias,
+                room_avatar_url=room_avatar_url,
+                room_join_rules=room_join_rules,
+                room_name=room_name,
+                inviter_display_name=inviter_display_name,
+                inviter_avatar_url=inviter_avatar_url
             )
         )
         msg_handler = self.hs.get_handlers().message_handler
@@ -721,7 +767,19 @@ class RoomMemberHandler(BaseHandler):
 
     @defer.inlineCallbacks
     def _ask_id_server_for_third_party_invite(
-            self, id_server, medium, address, room_id, sender):
+            self,
+            id_server,
+            medium,
+            address,
+            room_id,
+            inviter_user_id,
+            room_alias,
+            room_avatar_url,
+            room_join_rules,
+            room_name,
+            inviter_display_name,
+            inviter_avatar_url
+    ):
         is_url = "%s%s/_matrix/identity/api/v1/store-invite" % (
             id_server_scheme, id_server,
         )
@@ -731,7 +789,13 @@ class RoomMemberHandler(BaseHandler):
                 "medium": medium,
                 "address": address,
                 "room_id": room_id,
-                "sender": sender,
+                "room_alias": room_alias,
+                "room_avatar_url": room_avatar_url,
+                "room_join_rules": room_join_rules,
+                "room_name": room_name,
+                "sender": inviter_user_id,
+                "sender_display_name": inviter_display_name,
+                "sender_avatar_url": inviter_avatar_url,
             }
         )
         # TODO: Check for success
@@ -743,13 +807,17 @@ class RoomMemberHandler(BaseHandler):
         )
         defer.returnValue((token, public_key, key_validity_url, display_name))
 
+    def forget(self, user, room_id):
+        return self.store.forget(user.to_string(), room_id)
+
 
 class RoomListHandler(BaseHandler):
 
     @defer.inlineCallbacks
     def get_public_room_list(self):
         chunk = yield self.store.get_rooms(is_public=True)
-        results = yield defer.gatherResults(
+
+        room_members = yield defer.gatherResults(
             [
                 self.store.get_users_in_room(room["room_id"])
                 for room in chunk
@@ -757,12 +825,30 @@ class RoomListHandler(BaseHandler):
             consumeErrors=True,
         ).addErrback(unwrapFirstError)
 
+        avatar_urls = yield defer.gatherResults(
+            [
+                self.get_room_avatar_url(room["room_id"])
+                for room in chunk
+            ],
+            consumeErrors=True,
+        ).addErrback(unwrapFirstError)
+
         for i, room in enumerate(chunk):
-            room["num_joined_members"] = len(results[i])
+            room["num_joined_members"] = len(room_members[i])
+            if avatar_urls[i]:
+                room["avatar_url"] = avatar_urls[i]
 
         # FIXME (erikj): START is no longer a valid value
         defer.returnValue({"start": "START", "end": "END", "chunk": chunk})
 
+    @defer.inlineCallbacks
+    def get_room_avatar_url(self, room_id):
+        event = yield self.hs.get_state_handler().get_current_state(
+            room_id, "m.room.avatar"
+        )
+        if event and "url" in event.content:
+            defer.returnValue(event.content["url"])
+
 
 class RoomContextHandler(BaseHandler):
     @defer.inlineCallbacks
diff --git a/synapse/handlers/search.py b/synapse/handlers/search.py
index 50688e51a8..99ef56871c 100644
--- a/synapse/handlers/search.py
+++ b/synapse/handlers/search.py
@@ -131,6 +131,17 @@ class SearchHandler(BaseHandler):
         if batch_group == "room_id":
             room_ids.intersection_update({batch_group_key})
 
+        if not room_ids:
+            defer.returnValue({
+                "search_categories": {
+                    "room_events": {
+                        "results": [],
+                        "count": 0,
+                        "highlights": [],
+                    }
+                }
+            })
+
         rank_map = {}  # event_id -> rank of event
         allowed_events = []
         room_groups = {}  # Holds result of grouping by room, if applicable
@@ -139,11 +150,22 @@ class SearchHandler(BaseHandler):
         # Holds the next_batch for the entire result set if one of those exists
         global_next_batch = None
 
+        highlights = set()
+
+        count = None
+
         if order_by == "rank":
-            results = yield self.store.search_msgs(
+            search_result = yield self.store.search_msgs(
                 room_ids, search_term, keys
             )
 
+            count = search_result["count"]
+
+            if search_result["highlights"]:
+                highlights.update(search_result["highlights"])
+
+            results = search_result["results"]
+
             results_map = {r["event"].event_id: r for r in results}
 
             rank_map.update({r["event"].event_id: r["rank"] for r in results})
@@ -171,80 +193,78 @@ class SearchHandler(BaseHandler):
                 s["results"].append(e.event_id)
 
         elif order_by == "recent":
-            # In this case we specifically loop through each room as the given
-            # limit applies to each room, rather than a global list.
-            # This is not necessarilly a good idea.
-            for room_id in room_ids:
-                room_events = []
-                if batch_group == "room_id" and batch_group_key == room_id:
-                    pagination_token = batch_token
-                else:
-                    pagination_token = None
-                i = 0
-
-                # We keep looping and we keep filtering until we reach the limit
-                # or we run out of things.
-                # But only go around 5 times since otherwise synapse will be sad.
-                while len(room_events) < search_filter.limit() and i < 5:
-                    i += 1
-                    results = yield self.store.search_room(
-                        room_id, search_term, keys, search_filter.limit() * 2,
-                        pagination_token=pagination_token,
-                    )
+            room_events = []
+            i = 0
+
+            pagination_token = batch_token
+
+            # We keep looping and we keep filtering until we reach the limit
+            # or we run out of things.
+            # But only go around 5 times since otherwise synapse will be sad.
+            while len(room_events) < search_filter.limit() and i < 5:
+                i += 1
+                search_result = yield self.store.search_rooms(
+                    room_ids, search_term, keys, search_filter.limit() * 2,
+                    pagination_token=pagination_token,
+                )
 
-                    results_map = {r["event"].event_id: r for r in results}
+                if search_result["highlights"]:
+                    highlights.update(search_result["highlights"])
 
-                    rank_map.update({r["event"].event_id: r["rank"] for r in results})
+                count = search_result["count"]
 
-                    filtered_events = search_filter.filter([
-                        r["event"] for r in results
-                    ])
+                results = search_result["results"]
 
-                    events = yield self._filter_events_for_client(
-                        user.to_string(), filtered_events
-                    )
+                results_map = {r["event"].event_id: r for r in results}
 
-                    room_events.extend(events)
-                    room_events = room_events[:search_filter.limit()]
+                rank_map.update({r["event"].event_id: r["rank"] for r in results})
 
-                    if len(results) < search_filter.limit() * 2:
-                        pagination_token = None
-                        break
-                    else:
-                        pagination_token = results[-1]["pagination_token"]
-
-                if room_events:
-                    res = results_map[room_events[-1].event_id]
-                    pagination_token = res["pagination_token"]
-
-                    group = room_groups.setdefault(room_id, {})
-                    if pagination_token:
-                        next_batch = encode_base64("%s\n%s\n%s" % (
-                            "room_id", room_id, pagination_token
-                        ))
-                        group["next_batch"] = next_batch
-
-                        if batch_token:
-                            global_next_batch = next_batch
-
-                    group["results"] = [e.event_id for e in room_events]
-                    group["order"] = max(
-                        e.origin_server_ts/1000 for e in room_events
-                        if hasattr(e, "origin_server_ts")
-                    )
+                filtered_events = search_filter.filter([
+                    r["event"] for r in results
+                ])
+
+                events = yield self._filter_events_for_client(
+                    user.to_string(), filtered_events
+                )
 
-                allowed_events.extend(room_events)
+                room_events.extend(events)
+                room_events = room_events[:search_filter.limit()]
 
-            # Normalize the group orders
-            if room_groups:
-                if len(room_groups) > 1:
-                    mx = max(g["order"] for g in room_groups.values())
-                    mn = min(g["order"] for g in room_groups.values())
+                if len(results) < search_filter.limit() * 2:
+                    pagination_token = None
+                    break
+                else:
+                    pagination_token = results[-1]["pagination_token"]
 
-                    for g in room_groups.values():
-                        g["order"] = (g["order"] - mn) * 1.0 / (mx - mn)
+            for event in room_events:
+                group = room_groups.setdefault(event.room_id, {
+                    "results": [],
+                })
+                group["results"].append(event.event_id)
+
+            if room_events and len(room_events) >= search_filter.limit():
+                last_event_id = room_events[-1].event_id
+                pagination_token = results_map[last_event_id]["pagination_token"]
+
+                # We want to respect the given batch group and group keys so
+                # that if people blindly use the top level `next_batch` token
+                # it returns more from the same group (if applicable) rather
+                # than reverting to searching all results again.
+                if batch_group and batch_group_key:
+                    global_next_batch = encode_base64("%s\n%s\n%s" % (
+                        batch_group, batch_group_key, pagination_token
+                    ))
                 else:
-                    room_groups.values()[0]["order"] = 1
+                    global_next_batch = encode_base64("%s\n%s\n%s" % (
+                        "all", "", pagination_token
+                    ))
+
+                for room_id, group in room_groups.items():
+                    group["next_batch"] = encode_base64("%s\n%s\n%s" % (
+                        "room_id", room_id, pagination_token
+                    ))
+
+            allowed_events.extend(room_events)
 
         else:
             # We should never get here due to the guard earlier.
@@ -334,20 +354,19 @@ class SearchHandler(BaseHandler):
         # We're now about to serialize the events. We should not make any
         # blocking calls after this. Otherwise the 'age' will be wrong
 
-        results = {
-            e.event_id: {
+        results = [
+            {
                 "rank": rank_map[e.event_id],
                 "result": serialize_event(e, time_now),
                 "context": contexts.get(e.event_id, {}),
             }
             for e in allowed_events
-        }
-
-        logger.info("Found %d results", len(results))
+        ]
 
         rooms_cat_res = {
             "results": results,
-            "count": len(results)
+            "count": count,
+            "highlights": list(highlights),
         }
 
         if state_results:
diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py
index 877328b29e..feea407ea2 100644
--- a/synapse/handlers/sync.py
+++ b/synapse/handlers/sync.py
@@ -15,8 +15,9 @@
 
 from ._base import BaseHandler
 
-from synapse.streams.config import PaginationConfig
 from synapse.api.constants import Membership, EventTypes
+from synapse.api.errors import GuestAccessError
+from synapse.util import unwrapFirstError
 
 from twisted.internet import defer
 
@@ -28,6 +29,7 @@ logger = logging.getLogger(__name__)
 
 SyncConfig = collections.namedtuple("SyncConfig", [
     "user",
+    "is_guest",
     "filter",
 ])
 
@@ -100,6 +102,7 @@ class InvitedSyncResult(collections.namedtuple("InvitedSyncResult", [
 class SyncResult(collections.namedtuple("SyncResult", [
     "next_batch",  # Token for the next sync
     "presence",  # List of presence events for the user.
+    "account_data",  # List of account_data events for the user.
     "joined",  # JoinedSyncResult for each joined room.
     "invited",  # InvitedSyncResult for each invited room.
     "archived",  # ArchivedSyncResult for each archived room.
@@ -115,6 +118,8 @@ class SyncResult(collections.namedtuple("SyncResult", [
             self.presence or self.joined or self.invited
         )
 
+GuestRoom = collections.namedtuple("GuestRoom", ("room_id", "membership"))
+
 
 class SyncHandler(BaseHandler):
 
@@ -133,6 +138,18 @@ class SyncHandler(BaseHandler):
             A Deferred SyncResult.
         """
 
+        if sync_config.is_guest:
+            bad_rooms = []
+            for room_id in sync_config.filter.list_rooms():
+                world_readable = yield self._is_world_readable(room_id)
+                if not world_readable:
+                    bad_rooms.append(room_id)
+
+            if bad_rooms:
+                raise GuestAccessError(
+                    bad_rooms, 403, "Guest access not allowed"
+                )
+
         if timeout == 0 or since_token is None or full_state:
             # we are going to return immediately, so don't bother calling
             # notifier.wait_for_events.
@@ -149,6 +166,17 @@ class SyncHandler(BaseHandler):
             )
             defer.returnValue(result)
 
+    @defer.inlineCallbacks
+    def _is_world_readable(self, room_id):
+        state = yield self.hs.get_state_handler().get_current_state(
+            room_id,
+            EventTypes.RoomHistoryVisibility
+        )
+        if state and "history_visibility" in state.content:
+            defer.returnValue(state.content["history_visibility"] == "world_readable")
+        else:
+            defer.returnValue(False)
+
     def current_sync_for_user(self, sync_config, since_token=None,
                               full_state=False):
         """Get the sync for client needed to match what the server has now.
@@ -172,47 +200,71 @@ class SyncHandler(BaseHandler):
         """
         now_token = yield self.event_sources.get_current_token()
 
-        now_token, ephemeral_by_room = yield self.ephemeral_by_room(
-            sync_config, now_token
-        )
+        if sync_config.is_guest:
+            room_list = [
+                GuestRoom(room_id, Membership.JOIN)
+                for room_id in sync_config.filter.list_rooms()
+            ]
+
+            account_data = {}
+            account_data_by_room = {}
+            tags_by_room = {}
+
+        else:
+            membership_list = (Membership.INVITE, Membership.JOIN)
+            if sync_config.filter.include_leave:
+                membership_list += (Membership.LEAVE, Membership.BAN)
+
+            room_list = yield self.store.get_rooms_for_user_where_membership_is(
+                user_id=sync_config.user.to_string(),
+                membership_list=membership_list
+            )
+
+            account_data, account_data_by_room = (
+                yield self.store.get_account_data_for_user(
+                    sync_config.user.to_string()
+                )
+            )
+
+            tags_by_room = yield self.store.get_tags_for_user(
+                sync_config.user.to_string()
+            )
 
         presence_stream = self.event_sources.sources["presence"]
-        # TODO (mjark): This looks wrong, shouldn't we be getting the presence
-        # UP to the present rather than after the present?
-        pagination_config = PaginationConfig(from_token=now_token)
-        presence, _ = yield presence_stream.get_pagination_rows(
+
+        joined_room_ids = [
+            room.room_id for room in room_list
+            if room.membership == Membership.JOIN
+        ]
+
+        presence, _ = yield presence_stream.get_new_events(
+            from_key=0,
             user=sync_config.user,
-            pagination_config=pagination_config.get_source_config("presence"),
-            key=None
-        )
-        room_list = yield self.store.get_rooms_for_user_where_membership_is(
-            user_id=sync_config.user.to_string(),
-            membership_list=(
-                Membership.INVITE,
-                Membership.JOIN,
-                Membership.LEAVE,
-                Membership.BAN
-            )
+            room_ids=joined_room_ids,
+            is_guest=sync_config.is_guest,
         )
 
-        tags_by_room = yield self.store.get_tags_for_user(
-            sync_config.user.to_string()
+        now_token, ephemeral_by_room = yield self.ephemeral_by_room(
+            sync_config, now_token, joined_room_ids
         )
 
         joined = []
         invited = []
         archived = []
+        deferreds = []
         for event in room_list:
             if event.membership == Membership.JOIN:
-                room_sync = yield self.full_state_sync_for_joined_room(
+                room_sync_deferred = self.full_state_sync_for_joined_room(
                     room_id=event.room_id,
                     sync_config=sync_config,
                     now_token=now_token,
                     timeline_since_token=timeline_since_token,
                     ephemeral_by_room=ephemeral_by_room,
                     tags_by_room=tags_by_room,
+                    account_data_by_room=account_data_by_room,
                 )
-                joined.append(room_sync)
+                room_sync_deferred.addCallback(joined.append)
+                deferreds.append(room_sync_deferred)
             elif event.membership == Membership.INVITE:
                 invite = yield self.store.get_event(event.event_id)
                 invited.append(InvitedSyncResult(
@@ -223,18 +275,25 @@ class SyncHandler(BaseHandler):
                 leave_token = now_token.copy_and_replace(
                     "room_key", "s%d" % (event.stream_ordering,)
                 )
-                room_sync = yield self.full_state_sync_for_archived_room(
+                room_sync_deferred = self.full_state_sync_for_archived_room(
                     sync_config=sync_config,
                     room_id=event.room_id,
                     leave_event_id=event.event_id,
                     leave_token=leave_token,
                     timeline_since_token=timeline_since_token,
                     tags_by_room=tags_by_room,
+                    account_data_by_room=account_data_by_room,
                 )
-                archived.append(room_sync)
+                room_sync_deferred.addCallback(archived.append)
+                deferreds.append(room_sync_deferred)
+
+        yield defer.gatherResults(
+            deferreds, consumeErrors=True
+        ).addErrback(unwrapFirstError)
 
         defer.returnValue(SyncResult(
             presence=presence,
+            account_data=self.account_data_for_user(account_data),
             joined=joined,
             invited=invited,
             archived=archived,
@@ -244,7 +303,8 @@ class SyncHandler(BaseHandler):
     @defer.inlineCallbacks
     def full_state_sync_for_joined_room(self, room_id, sync_config,
                                         now_token, timeline_since_token,
-                                        ephemeral_by_room, tags_by_room):
+                                        ephemeral_by_room, tags_by_room,
+                                        account_data_by_room):
         """Sync a room for a client which is starting without any state
         Returns:
             A Deferred JoinedSyncResult.
@@ -262,26 +322,47 @@ class SyncHandler(BaseHandler):
             state=current_state,
             ephemeral=ephemeral_by_room.get(room_id, []),
             account_data=self.account_data_for_room(
-                room_id, tags_by_room
+                room_id, tags_by_room, account_data_by_room
             ),
         ))
 
-    def account_data_for_room(self, room_id, tags_by_room):
-        account_data = []
+    def account_data_for_user(self, account_data):
+        account_data_events = []
+
+        for account_data_type, content in account_data.items():
+            account_data_events.append({
+                "type": account_data_type,
+                "content": content,
+            })
+
+        return account_data_events
+
+    def account_data_for_room(self, room_id, tags_by_room, account_data_by_room):
+        account_data_events = []
         tags = tags_by_room.get(room_id)
         if tags is not None:
-            account_data.append({
+            account_data_events.append({
                 "type": "m.tag",
                 "content": {"tags": tags},
             })
-        return account_data
+
+        account_data = account_data_by_room.get(room_id, {})
+        for account_data_type, content in account_data.items():
+            account_data_events.append({
+                "type": account_data_type,
+                "content": content,
+            })
+
+        return account_data_events
 
     @defer.inlineCallbacks
-    def ephemeral_by_room(self, sync_config, now_token, since_token=None):
+    def ephemeral_by_room(self, sync_config, now_token, room_ids,
+                          since_token=None):
         """Get the ephemeral events for each room the user is in
         Args:
             sync_config (SyncConfig): The flags, filters and user for the sync.
             now_token (StreamToken): Where the server is currently up to.
+            room_ids (list): List of room id strings to get data for.
             since_token (StreamToken): Where the server was when the client
                 last synced.
         Returns:
@@ -292,9 +373,6 @@ class SyncHandler(BaseHandler):
 
         typing_key = since_token.typing_key if since_token else "0"
 
-        rooms = yield self.store.get_rooms_for_user(sync_config.user.to_string())
-        room_ids = [room.room_id for room in rooms]
-
         typing_source = self.event_sources.sources["typing"]
         typing, typing_key = yield typing_source.get_new_events(
             user=sync_config.user,
@@ -341,7 +419,8 @@ class SyncHandler(BaseHandler):
     @defer.inlineCallbacks
     def full_state_sync_for_archived_room(self, room_id, sync_config,
                                           leave_event_id, leave_token,
-                                          timeline_since_token, tags_by_room):
+                                          timeline_since_token, tags_by_room,
+                                          account_data_by_room):
         """Sync a room for a client which is starting without any state
         Returns:
             A Deferred JoinedSyncResult.
@@ -358,7 +437,7 @@ class SyncHandler(BaseHandler):
             timeline=batch,
             state=leave_state,
             account_data=self.account_data_for_room(
-                room_id, tags_by_room
+                room_id, tags_by_room, account_data_by_room
             ),
         ))
 
@@ -371,8 +450,38 @@ class SyncHandler(BaseHandler):
         """
         now_token = yield self.event_sources.get_current_token()
 
-        rooms = yield self.store.get_rooms_for_user(sync_config.user.to_string())
-        room_ids = [room.room_id for room in rooms]
+        if sync_config.is_guest:
+            room_ids = sync_config.filter.list_rooms()
+
+            tags_by_room = {}
+            account_data = {}
+            account_data_by_room = {}
+
+        else:
+            rooms = yield self.store.get_rooms_for_user(
+                sync_config.user.to_string()
+            )
+            room_ids = [room.room_id for room in rooms]
+
+            now_token, ephemeral_by_room = yield self.ephemeral_by_room(
+                sync_config, now_token, since_token
+            )
+
+            tags_by_room = yield self.store.get_updated_tags(
+                sync_config.user.to_string(),
+                since_token.account_data_key,
+            )
+
+            account_data, account_data_by_room = (
+                yield self.store.get_updated_account_data_for_user(
+                    sync_config.user.to_string(),
+                    since_token.account_data_key,
+                )
+            )
+
+        now_token, ephemeral_by_room = yield self.ephemeral_by_room(
+            sync_config, now_token, room_ids, since_token
+        )
 
         presence_source = self.event_sources.sources["presence"]
         presence, presence_key = yield presence_source.get_new_events(
@@ -380,15 +489,10 @@ class SyncHandler(BaseHandler):
             from_key=since_token.presence_key,
             limit=sync_config.filter.presence_limit(),
             room_ids=room_ids,
-            # /sync doesn't support guest access, they can't get to this point in code
-            is_guest=False,
+            is_guest=sync_config.is_guest,
         )
         now_token = now_token.copy_and_replace("presence_key", presence_key)
 
-        now_token, ephemeral_by_room = yield self.ephemeral_by_room(
-            sync_config, now_token, since_token
-        )
-
         rm_handler = self.hs.get_handlers().room_member_handler
         app_service = yield self.store.get_app_service_by_user_id(
             sync_config.user.to_string()
@@ -408,11 +512,8 @@ class SyncHandler(BaseHandler):
             from_key=since_token.room_key,
             to_key=now_token.room_key,
             limit=timeline_limit + 1,
-        )
-
-        tags_by_room = yield self.store.get_updated_tags(
-            sync_config.user.to_string(),
-            since_token.account_data_key,
+            room_ids=room_ids if sync_config.is_guest else (),
+            is_guest=sync_config.is_guest,
         )
 
         joined = []
@@ -469,7 +570,7 @@ class SyncHandler(BaseHandler):
                     state=state,
                     ephemeral=ephemeral_by_room.get(room_id, []),
                     account_data=self.account_data_for_room(
-                        room_id, tags_by_room
+                        room_id, tags_by_room, account_data_by_room
                     ),
                 )
                 logger.debug("Result for room %s: %r", room_id, room_sync)
@@ -492,14 +593,15 @@ class SyncHandler(BaseHandler):
             for room_id in joined_room_ids:
                 room_sync = yield self.incremental_sync_with_gap_for_room(
                     room_id, sync_config, since_token, now_token,
-                    ephemeral_by_room, tags_by_room
+                    ephemeral_by_room, tags_by_room, account_data_by_room
                 )
                 if room_sync:
                     joined.append(room_sync)
 
         for leave_event in leave_events:
             room_sync = yield self.incremental_sync_for_archived_room(
-                sync_config, leave_event, since_token, tags_by_room
+                sync_config, leave_event, since_token, tags_by_room,
+                account_data_by_room
             )
             archived.append(room_sync)
 
@@ -510,6 +612,7 @@ class SyncHandler(BaseHandler):
 
         defer.returnValue(SyncResult(
             presence=presence,
+            account_data=self.account_data_for_user(account_data),
             joined=joined,
             invited=invited,
             archived=archived,
@@ -542,7 +645,10 @@ class SyncHandler(BaseHandler):
             end_key = "s" + room_key.split('-')[-1]
             loaded_recents = sync_config.filter.filter_room_timeline(events)
             loaded_recents = yield self._filter_events_for_client(
-                sync_config.user.to_string(), loaded_recents,
+                sync_config.user.to_string(),
+                loaded_recents,
+                is_guest=sync_config.is_guest,
+                require_all_visible_for_guests=False
             )
             loaded_recents.extend(recents)
             recents = loaded_recents
@@ -566,7 +672,8 @@ class SyncHandler(BaseHandler):
     @defer.inlineCallbacks
     def incremental_sync_with_gap_for_room(self, room_id, sync_config,
                                            since_token, now_token,
-                                           ephemeral_by_room, tags_by_room):
+                                           ephemeral_by_room, tags_by_room,
+                                           account_data_by_room):
         """ Get the incremental delta needed to bring the client up to date for
         the room. Gives the client the most recent events and the changes to
         state.
@@ -606,7 +713,7 @@ class SyncHandler(BaseHandler):
             state=state,
             ephemeral=ephemeral_by_room.get(room_id, []),
             account_data=self.account_data_for_room(
-                room_id, tags_by_room
+                room_id, tags_by_room, account_data_by_room
             ),
         )
 
@@ -616,7 +723,8 @@ class SyncHandler(BaseHandler):
 
     @defer.inlineCallbacks
     def incremental_sync_for_archived_room(self, sync_config, leave_event,
-                                           since_token, tags_by_room):
+                                           since_token, tags_by_room,
+                                           account_data_by_room):
         """ Get the incremental delta needed to bring the client up to date for
         the archived room.
         Returns:
@@ -654,7 +762,7 @@ class SyncHandler(BaseHandler):
             timeline=batch,
             state=state_events_delta,
             account_data=self.account_data_for_room(
-                leave_event.room_id, tags_by_room
+                leave_event.room_id, tags_by_room, account_data_by_room
             ),
         )
 
diff --git a/synapse/http/server.py b/synapse/http/server.py
index 50feea6f1c..682b6b379b 100644
--- a/synapse/http/server.py
+++ b/synapse/http/server.py
@@ -15,7 +15,7 @@
 
 
 from synapse.api.errors import (
-    cs_exception, SynapseError, CodeMessageException, UnrecognizedRequestError
+    cs_exception, SynapseError, CodeMessageException, UnrecognizedRequestError, Codes
 )
 from synapse.util.logcontext import LoggingContext, PreserveLoggingContext
 import synapse.metrics
@@ -53,6 +53,23 @@ response_timer = metrics.register_distribution(
     labels=["method", "servlet"]
 )
 
+response_ru_utime = metrics.register_distribution(
+    "response_ru_utime", labels=["method", "servlet"]
+)
+
+response_ru_stime = metrics.register_distribution(
+    "response_ru_stime", labels=["method", "servlet"]
+)
+
+response_db_txn_count = metrics.register_distribution(
+    "response_db_txn_count", labels=["method", "servlet"]
+)
+
+response_db_txn_duration = metrics.register_distribution(
+    "response_db_txn_duration", labels=["method", "servlet"]
+)
+
+
 _next_request_id = 0
 
 
@@ -110,7 +127,10 @@ def request_handler(request_handler):
                     respond_with_json(
                         request,
                         500,
-                        {"error": "Internal server error"},
+                        {
+                            "error": "Internal server error",
+                            "errcode": Codes.UNKNOWN,
+                        },
                         send_cors=True
                     )
     return wrapped_request_handler
@@ -120,7 +140,7 @@ class HttpServer(object):
     """ Interface for registering callbacks on a HTTP server
     """
 
-    def register_path(self, method, path_pattern, callback):
+    def register_paths(self, method, path_patterns, callback):
         """ Register a callback that gets fired if we receive a http request
         with the given method for a path that matches the given regex.
 
@@ -129,7 +149,7 @@ class HttpServer(object):
 
         Args:
             method (str): The method to listen to.
-            path_pattern (str): The regex used to match requests.
+            path_patterns (list<SRE_Pattern>): The regex used to match requests.
             callback (function): The function to fire if we receive a matched
                 request. The first argument will be the request object and
                 subsequent arguments will be any matched groups from the regex.
@@ -165,10 +185,11 @@ class JsonResource(HttpServer, resource.Resource):
         self.version_string = hs.version_string
         self.hs = hs
 
-    def register_path(self, method, path_pattern, callback):
-        self.path_regexs.setdefault(method, []).append(
-            self._PathEntry(path_pattern, callback)
-        )
+    def register_paths(self, method, path_patterns, callback):
+        for path_pattern in path_patterns:
+            self.path_regexs.setdefault(method, []).append(
+                self._PathEntry(path_pattern, callback)
+            )
 
     def render(self, request):
         """ This gets called by twisted every time someone sends us a request.
@@ -220,6 +241,21 @@ class JsonResource(HttpServer, resource.Resource):
                 self.clock.time_msec() - start, request.method, servlet_classname
             )
 
+            try:
+                context = LoggingContext.current_context()
+                ru_utime, ru_stime = context.get_resource_usage()
+
+                response_ru_utime.inc_by(ru_utime, request.method, servlet_classname)
+                response_ru_stime.inc_by(ru_stime, request.method, servlet_classname)
+                response_db_txn_count.inc_by(
+                    context.db_txn_count, request.method, servlet_classname
+                )
+                response_db_txn_duration.inc_by(
+                    context.db_txn_duration, request.method, servlet_classname
+                )
+            except:
+                pass
+
             return
 
         # Huh. No one wanted to handle that? Fiiiiiine. Send 400.
diff --git a/synapse/http/servlet.py b/synapse/http/servlet.py
index 9cda17fcf8..32b6d6cd72 100644
--- a/synapse/http/servlet.py
+++ b/synapse/http/servlet.py
@@ -19,7 +19,6 @@ from synapse.api.errors import SynapseError
 
 import logging
 
-
 logger = logging.getLogger(__name__)
 
 
@@ -102,12 +101,13 @@ class RestServlet(object):
 
     def register(self, http_server):
         """ Register this servlet with the given HTTP server. """
-        if hasattr(self, "PATTERN"):
-            pattern = self.PATTERN
+        if hasattr(self, "PATTERNS"):
+            patterns = self.PATTERNS
 
             for method in ("GET", "PUT", "POST", "OPTIONS", "DELETE"):
                 if hasattr(self, "on_%s" % (method,)):
                     method_handler = getattr(self, "on_%s" % (method,))
-                    http_server.register_path(method, pattern, method_handler)
+                    http_server.register_paths(method, patterns, method_handler)
+
         else:
             raise NotImplementedError("RestServlet must register something.")
diff --git a/synapse/notifier.py b/synapse/notifier.py
index e3b42e2331..fd52578325 100644
--- a/synapse/notifier.py
+++ b/synapse/notifier.py
@@ -349,7 +349,7 @@ class Notifier(object):
         room_ids = []
         if is_guest:
             if guest_room_id:
-                if not self._is_world_readable(guest_room_id):
+                if not (yield self._is_world_readable(guest_room_id)):
                     raise AuthError(403, "Guest access not allowed")
                 room_ids = [guest_room_id]
         else:
diff --git a/synapse/push/__init__.py b/synapse/push/__init__.py
index 0e0c61dec8..e7c964bcd2 100644
--- a/synapse/push/__init__.py
+++ b/synapse/push/__init__.py
@@ -16,14 +16,12 @@
 from twisted.internet import defer
 
 from synapse.streams.config import PaginationConfig
-from synapse.types import StreamToken, UserID
+from synapse.types import StreamToken
 
 import synapse.util.async
-import baserules
+import push_rule_evaluator as push_rule_evaluator
 
 import logging
-import simplejson as json
-import re
 import random
 
 logger = logging.getLogger(__name__)
@@ -33,9 +31,6 @@ class Pusher(object):
     INITIAL_BACKOFF = 1000
     MAX_BACKOFF = 60 * 60 * 1000
     GIVE_UP_AFTER = 24 * 60 * 60 * 1000
-    DEFAULT_ACTIONS = ['dont_notify']
-
-    INEQUALITY_EXPR = re.compile("^([=<>]*)([0-9]*)$")
 
     def __init__(self, _hs, profile_tag, user_name, app_id,
                  app_display_name, device_display_name, pushkey, pushkey_ts,
@@ -63,161 +58,6 @@ class Pusher(object):
         self.has_unread = True
 
     @defer.inlineCallbacks
-    def _actions_for_event(self, ev):
-        """
-        This should take into account notification settings that the user
-        has configured both globally and per-room when we have the ability
-        to do such things.
-        """
-        if ev['user_id'] == self.user_name:
-            # let's assume you probably know about messages you sent yourself
-            defer.returnValue(['dont_notify'])
-
-        rawrules = yield self.store.get_push_rules_for_user(self.user_name)
-
-        rules = []
-        for rawrule in rawrules:
-            rule = dict(rawrule)
-            rule['conditions'] = json.loads(rawrule['conditions'])
-            rule['actions'] = json.loads(rawrule['actions'])
-            rules.append(rule)
-
-        enabled_map = yield self.store.get_push_rules_enabled_for_user(self.user_name)
-
-        user = UserID.from_string(self.user_name)
-
-        rules = baserules.list_with_base_rules(rules, user)
-
-        room_id = ev['room_id']
-
-        # get *our* member event for display name matching
-        my_display_name = None
-        our_member_event = yield self.store.get_current_state(
-            room_id=room_id,
-            event_type='m.room.member',
-            state_key=self.user_name,
-        )
-        if our_member_event:
-            my_display_name = our_member_event[0].content.get("displayname")
-
-        room_members = yield self.store.get_users_in_room(room_id)
-        room_member_count = len(room_members)
-
-        for r in rules:
-            if r['rule_id'] in enabled_map:
-                r['enabled'] = enabled_map[r['rule_id']]
-            elif 'enabled' not in r:
-                r['enabled'] = True
-            if not r['enabled']:
-                continue
-            matches = True
-
-            conditions = r['conditions']
-            actions = r['actions']
-
-            for c in conditions:
-                matches &= self._event_fulfills_condition(
-                    ev, c, display_name=my_display_name,
-                    room_member_count=room_member_count
-                )
-            logger.debug(
-                "Rule %s %s",
-                r['rule_id'], "matches" if matches else "doesn't match"
-            )
-            # ignore rules with no actions (we have an explict 'dont_notify')
-            if len(actions) == 0:
-                logger.warn(
-                    "Ignoring rule id %s with no actions for user %s",
-                    r['rule_id'], self.user_name
-                )
-                continue
-            if matches:
-                logger.info(
-                    "%s matches for user %s, event %s",
-                    r['rule_id'], self.user_name, ev['event_id']
-                )
-                defer.returnValue(actions)
-
-        logger.info(
-            "No rules match for user %s, event %s",
-            self.user_name, ev['event_id']
-        )
-        defer.returnValue(Pusher.DEFAULT_ACTIONS)
-
-    @staticmethod
-    def _glob_to_regexp(glob):
-        r = re.escape(glob)
-        r = re.sub(r'\\\*', r'.*?', r)
-        r = re.sub(r'\\\?', r'.', r)
-
-        # handle [abc], [a-z] and [!a-z] style ranges.
-        r = re.sub(r'\\\[(\\\!|)(.*)\\\]',
-                   lambda x: ('[%s%s]' % (x.group(1) and '^' or '',
-                                          re.sub(r'\\\-', '-', x.group(2)))), r)
-        return r
-
-    def _event_fulfills_condition(self, ev, condition, display_name, room_member_count):
-        if condition['kind'] == 'event_match':
-            if 'pattern' not in condition:
-                logger.warn("event_match condition with no pattern")
-                return False
-            # XXX: optimisation: cache our pattern regexps
-            if condition['key'] == 'content.body':
-                r = r'\b%s\b' % self._glob_to_regexp(condition['pattern'])
-            else:
-                r = r'^%s$' % self._glob_to_regexp(condition['pattern'])
-            val = _value_for_dotted_key(condition['key'], ev)
-            if val is None:
-                return False
-            return re.search(r, val, flags=re.IGNORECASE) is not None
-
-        elif condition['kind'] == 'device':
-            if 'profile_tag' not in condition:
-                return True
-            return condition['profile_tag'] == self.profile_tag
-
-        elif condition['kind'] == 'contains_display_name':
-            # This is special because display names can be different
-            # between rooms and so you can't really hard code it in a rule.
-            # Optimisation: we should cache these names and update them from
-            # the event stream.
-            if 'content' not in ev or 'body' not in ev['content']:
-                return False
-            if not display_name:
-                return False
-            return re.search(
-                r"\b%s\b" % re.escape(display_name), ev['content']['body'],
-                flags=re.IGNORECASE
-            ) is not None
-
-        elif condition['kind'] == 'room_member_count':
-            if 'is' not in condition:
-                return False
-            m = Pusher.INEQUALITY_EXPR.match(condition['is'])
-            if not m:
-                return False
-            ineq = m.group(1)
-            rhs = m.group(2)
-            if not rhs.isdigit():
-                return False
-            rhs = int(rhs)
-
-            if ineq == '' or ineq == '==':
-                return room_member_count == rhs
-            elif ineq == '<':
-                return room_member_count < rhs
-            elif ineq == '>':
-                return room_member_count > rhs
-            elif ineq == '>=':
-                return room_member_count >= rhs
-            elif ineq == '<=':
-                return room_member_count <= rhs
-            else:
-                return False
-        else:
-            return True
-
-    @defer.inlineCallbacks
     def get_context_for_event(self, ev):
         name_aliases = yield self.store.get_room_name_and_aliases(
             ev['room_id']
@@ -308,8 +148,14 @@ class Pusher(object):
             return
 
         processed = False
-        actions = yield self._actions_for_event(single_event)
-        tweaks = _tweaks_for_actions(actions)
+
+        rule_evaluator = yield \
+            push_rule_evaluator.evaluator_for_user_name_and_profile_tag(
+                self.user_name, self.profile_tag, single_event['room_id'], self.store
+            )
+
+        actions = yield rule_evaluator.actions_for_event(single_event)
+        tweaks = rule_evaluator.tweaks_for_actions(actions)
 
         if len(actions) == 0:
             logger.warn("Empty actions! Using default action.")
@@ -448,27 +294,6 @@ class Pusher(object):
                     self.has_unread = False
 
 
-def _value_for_dotted_key(dotted_key, event):
-    parts = dotted_key.split(".")
-    val = event
-    while len(parts) > 0:
-        if parts[0] not in val:
-            return None
-        val = val[parts[0]]
-        parts = parts[1:]
-    return val
-
-
-def _tweaks_for_actions(actions):
-    tweaks = {}
-    for a in actions:
-        if not isinstance(a, dict):
-            continue
-        if 'set_tweak' in a and 'value' in a:
-            tweaks[a['set_tweak']] = a['value']
-    return tweaks
-
-
 class PusherConfigException(Exception):
     def __init__(self, msg):
         super(PusherConfigException, self).__init__(msg)
diff --git a/synapse/push/baserules.py b/synapse/push/baserules.py
index 1f015a7f2e..7f76382a17 100644
--- a/synapse/push/baserules.py
+++ b/synapse/push/baserules.py
@@ -247,6 +247,7 @@ def make_base_append_underride_rules(user):
         },
         {
             'rule_id': 'global/underride/.m.rule.message',
+            'enabled': False,
             'conditions': [
                 {
                     'kind': 'event_match',
diff --git a/synapse/push/httppusher.py b/synapse/push/httppusher.py
index a02fed57b4..5160775e59 100644
--- a/synapse/push/httppusher.py
+++ b/synapse/push/httppusher.py
@@ -14,7 +14,6 @@
 # limitations under the License.
 
 from synapse.push import Pusher, PusherConfigException
-from synapse.http.client import SimpleHttpClient
 
 from twisted.internet import defer
 
@@ -46,7 +45,7 @@ class HttpPusher(Pusher):
                 "'url' required in data for HTTP pusher"
             )
         self.url = data['url']
-        self.httpCli = SimpleHttpClient(self.hs)
+        self.http_client = _hs.get_simple_http_client()
         self.data_minus_url = {}
         self.data_minus_url.update(self.data)
         del self.data_minus_url['url']
@@ -107,7 +106,7 @@ class HttpPusher(Pusher):
         if not notification_dict:
             defer.returnValue([])
         try:
-            resp = yield self.httpCli.post_json_get_json(self.url, notification_dict)
+            resp = yield self.http_client.post_json_get_json(self.url, notification_dict)
         except:
             logger.warn("Failed to push %s ", self.url)
             defer.returnValue(False)
@@ -138,7 +137,7 @@ class HttpPusher(Pusher):
             }
         }
         try:
-            resp = yield self.httpCli.post_json_get_json(self.url, d)
+            resp = yield self.http_client.post_json_get_json(self.url, d)
         except:
             logger.exception("Failed to push %s ", self.url)
             defer.returnValue(False)
diff --git a/synapse/push/push_rule_evaluator.py b/synapse/push/push_rule_evaluator.py
new file mode 100644
index 0000000000..92c7fd048f
--- /dev/null
+++ b/synapse/push/push_rule_evaluator.py
@@ -0,0 +1,224 @@
+# -*- coding: utf-8 -*-
+# Copyright 2015 OpenMarket Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from twisted.internet import defer
+
+from synapse.types import UserID
+
+import baserules
+
+import logging
+import simplejson as json
+import re
+
+logger = logging.getLogger(__name__)
+
+
+@defer.inlineCallbacks
+def evaluator_for_user_name_and_profile_tag(user_name, profile_tag, room_id, store):
+    rawrules = yield store.get_push_rules_for_user(user_name)
+    enabled_map = yield store.get_push_rules_enabled_for_user(user_name)
+    our_member_event = yield store.get_current_state(
+        room_id=room_id,
+        event_type='m.room.member',
+        state_key=user_name,
+    )
+
+    defer.returnValue(PushRuleEvaluator(
+        user_name, profile_tag, rawrules, enabled_map,
+        room_id, our_member_event, store
+    ))
+
+
+class PushRuleEvaluator:
+    DEFAULT_ACTIONS = ['dont_notify']
+    INEQUALITY_EXPR = re.compile("^([=<>]*)([0-9]*)$")
+
+    def __init__(self, user_name, profile_tag, raw_rules, enabled_map, room_id,
+                 our_member_event, store):
+        self.user_name = user_name
+        self.profile_tag = profile_tag
+        self.room_id = room_id
+        self.our_member_event = our_member_event
+        self.store = store
+
+        rules = []
+        for raw_rule in raw_rules:
+            rule = dict(raw_rule)
+            rule['conditions'] = json.loads(raw_rule['conditions'])
+            rule['actions'] = json.loads(raw_rule['actions'])
+            rules.append(rule)
+
+        user = UserID.from_string(self.user_name)
+        self.rules = baserules.list_with_base_rules(rules, user)
+
+        self.enabled_map = enabled_map
+
+    @staticmethod
+    def tweaks_for_actions(actions):
+        tweaks = {}
+        for a in actions:
+            if not isinstance(a, dict):
+                continue
+            if 'set_tweak' in a and 'value' in a:
+                tweaks[a['set_tweak']] = a['value']
+        return tweaks
+
+    @defer.inlineCallbacks
+    def actions_for_event(self, ev):
+        """
+        This should take into account notification settings that the user
+        has configured both globally and per-room when we have the ability
+        to do such things.
+        """
+        if ev['user_id'] == self.user_name:
+            # let's assume you probably know about messages you sent yourself
+            defer.returnValue(['dont_notify'])
+
+        room_id = ev['room_id']
+
+        # get *our* member event for display name matching
+        my_display_name = None
+
+        if self.our_member_event:
+            my_display_name = self.our_member_event[0].content.get("displayname")
+
+        room_members = yield self.store.get_users_in_room(room_id)
+        room_member_count = len(room_members)
+
+        for r in self.rules:
+            if r['rule_id'] in self.enabled_map:
+                r['enabled'] = self.enabled_map[r['rule_id']]
+            elif 'enabled' not in r:
+                r['enabled'] = True
+            if not r['enabled']:
+                continue
+            matches = True
+
+            conditions = r['conditions']
+            actions = r['actions']
+
+            for c in conditions:
+                matches &= self._event_fulfills_condition(
+                    ev, c, display_name=my_display_name,
+                    room_member_count=room_member_count
+                )
+            logger.debug(
+                "Rule %s %s",
+                r['rule_id'], "matches" if matches else "doesn't match"
+            )
+            # ignore rules with no actions (we have an explict 'dont_notify')
+            if len(actions) == 0:
+                logger.warn(
+                    "Ignoring rule id %s with no actions for user %s",
+                    r['rule_id'], self.user_name
+                )
+                continue
+            if matches:
+                logger.info(
+                    "%s matches for user %s, event %s",
+                    r['rule_id'], self.user_name, ev['event_id']
+                )
+                defer.returnValue(actions)
+
+        logger.info(
+            "No rules match for user %s, event %s",
+            self.user_name, ev['event_id']
+        )
+        defer.returnValue(PushRuleEvaluator.DEFAULT_ACTIONS)
+
+    @staticmethod
+    def _glob_to_regexp(glob):
+        r = re.escape(glob)
+        r = re.sub(r'\\\*', r'.*?', r)
+        r = re.sub(r'\\\?', r'.', r)
+
+        # handle [abc], [a-z] and [!a-z] style ranges.
+        r = re.sub(r'\\\[(\\\!|)(.*)\\\]',
+                   lambda x: ('[%s%s]' % (x.group(1) and '^' or '',
+                                          re.sub(r'\\\-', '-', x.group(2)))), r)
+        return r
+
+    def _event_fulfills_condition(self, ev, condition, display_name, room_member_count):
+        if condition['kind'] == 'event_match':
+            if 'pattern' not in condition:
+                logger.warn("event_match condition with no pattern")
+                return False
+            # XXX: optimisation: cache our pattern regexps
+            if condition['key'] == 'content.body':
+                r = r'\b%s\b' % self._glob_to_regexp(condition['pattern'])
+            else:
+                r = r'^%s$' % self._glob_to_regexp(condition['pattern'])
+            val = _value_for_dotted_key(condition['key'], ev)
+            if val is None:
+                return False
+            return re.search(r, val, flags=re.IGNORECASE) is not None
+
+        elif condition['kind'] == 'device':
+            if 'profile_tag' not in condition:
+                return True
+            return condition['profile_tag'] == self.profile_tag
+
+        elif condition['kind'] == 'contains_display_name':
+            # This is special because display names can be different
+            # between rooms and so you can't really hard code it in a rule.
+            # Optimisation: we should cache these names and update them from
+            # the event stream.
+            if 'content' not in ev or 'body' not in ev['content']:
+                return False
+            if not display_name:
+                return False
+            return re.search(
+                r"\b%s\b" % re.escape(display_name), ev['content']['body'],
+                flags=re.IGNORECASE
+            ) is not None
+
+        elif condition['kind'] == 'room_member_count':
+            if 'is' not in condition:
+                return False
+            m = PushRuleEvaluator.INEQUALITY_EXPR.match(condition['is'])
+            if not m:
+                return False
+            ineq = m.group(1)
+            rhs = m.group(2)
+            if not rhs.isdigit():
+                return False
+            rhs = int(rhs)
+
+            if ineq == '' or ineq == '==':
+                return room_member_count == rhs
+            elif ineq == '<':
+                return room_member_count < rhs
+            elif ineq == '>':
+                return room_member_count > rhs
+            elif ineq == '>=':
+                return room_member_count >= rhs
+            elif ineq == '<=':
+                return room_member_count <= rhs
+            else:
+                return False
+        else:
+            return True
+
+
+def _value_for_dotted_key(dotted_key, event):
+    parts = dotted_key.split(".")
+    val = event
+    while len(parts) > 0:
+        if parts[0] not in val:
+            return None
+        val = val[parts[0]]
+        parts = parts[1:]
+    return val
diff --git a/synapse/rest/__init__.py b/synapse/rest/__init__.py
index 1a84d94cd9..7b67e96204 100644
--- a/synapse/rest/__init__.py
+++ b/synapse/rest/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2015 OpenMarket Ltd
+# Copyright 2014, 2015 OpenMarket Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -12,3 +12,69 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+
+from synapse.rest.client.v1 import (
+    room,
+    events,
+    profile,
+    presence,
+    initial_sync,
+    directory,
+    voip,
+    admin,
+    pusher,
+    push_rule,
+    register as v1_register,
+    login as v1_login,
+)
+
+from synapse.rest.client.v2_alpha import (
+    sync,
+    filter,
+    account,
+    register,
+    auth,
+    receipts,
+    keys,
+    tokenrefresh,
+    tags,
+    account_data,
+)
+
+from synapse.http.server import JsonResource
+
+
+class ClientRestResource(JsonResource):
+    """A resource for version 1 of the matrix client API."""
+
+    def __init__(self, hs):
+        JsonResource.__init__(self, hs, canonical_json=False)
+        self.register_servlets(self, hs)
+
+    @staticmethod
+    def register_servlets(client_resource, hs):
+        # "v1"
+        room.register_servlets(hs, client_resource)
+        events.register_servlets(hs, client_resource)
+        v1_register.register_servlets(hs, client_resource)
+        v1_login.register_servlets(hs, client_resource)
+        profile.register_servlets(hs, client_resource)
+        presence.register_servlets(hs, client_resource)
+        initial_sync.register_servlets(hs, client_resource)
+        directory.register_servlets(hs, client_resource)
+        voip.register_servlets(hs, client_resource)
+        admin.register_servlets(hs, client_resource)
+        pusher.register_servlets(hs, client_resource)
+        push_rule.register_servlets(hs, client_resource)
+
+        # "v2"
+        sync.register_servlets(hs, client_resource)
+        filter.register_servlets(hs, client_resource)
+        account.register_servlets(hs, client_resource)
+        register.register_servlets(hs, client_resource)
+        auth.register_servlets(hs, client_resource)
+        receipts.register_servlets(hs, client_resource)
+        keys.register_servlets(hs, client_resource)
+        tokenrefresh.register_servlets(hs, client_resource)
+        tags.register_servlets(hs, client_resource)
+        account_data.register_servlets(hs, client_resource)
diff --git a/synapse/rest/client/v1/__init__.py b/synapse/rest/client/v1/__init__.py
index cc9b49d539..c488b10d3c 100644
--- a/synapse/rest/client/v1/__init__.py
+++ b/synapse/rest/client/v1/__init__.py
@@ -12,33 +12,3 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-
-from . import (
-    room, events, register, login, profile, presence, initial_sync, directory,
-    voip, admin, pusher, push_rule
-)
-
-from synapse.http.server import JsonResource
-
-
-class ClientV1RestResource(JsonResource):
-    """A resource for version 1 of the matrix client API."""
-
-    def __init__(self, hs):
-        JsonResource.__init__(self, hs, canonical_json=False)
-        self.register_servlets(self, hs)
-
-    @staticmethod
-    def register_servlets(client_resource, hs):
-        room.register_servlets(hs, client_resource)
-        events.register_servlets(hs, client_resource)
-        register.register_servlets(hs, client_resource)
-        login.register_servlets(hs, client_resource)
-        profile.register_servlets(hs, client_resource)
-        presence.register_servlets(hs, client_resource)
-        initial_sync.register_servlets(hs, client_resource)
-        directory.register_servlets(hs, client_resource)
-        voip.register_servlets(hs, client_resource)
-        admin.register_servlets(hs, client_resource)
-        pusher.register_servlets(hs, client_resource)
-        push_rule.register_servlets(hs, client_resource)
diff --git a/synapse/rest/client/v1/admin.py b/synapse/rest/client/v1/admin.py
index bdde43864c..886199a6da 100644
--- a/synapse/rest/client/v1/admin.py
+++ b/synapse/rest/client/v1/admin.py
@@ -18,7 +18,7 @@ from twisted.internet import defer
 from synapse.api.errors import AuthError, SynapseError
 from synapse.types import UserID
 
-from base import ClientV1RestServlet, client_path_pattern
+from base import ClientV1RestServlet, client_path_patterns
 
 import logging
 
@@ -26,7 +26,7 @@ logger = logging.getLogger(__name__)
 
 
 class WhoisRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/admin/whois/(?P<user_id>[^/]*)")
+    PATTERNS = client_path_patterns("/admin/whois/(?P<user_id>[^/]*)")
 
     @defer.inlineCallbacks
     def on_GET(self, request, user_id):
diff --git a/synapse/rest/client/v1/base.py b/synapse/rest/client/v1/base.py
index 504a5e432f..6273ce0795 100644
--- a/synapse/rest/client/v1/base.py
+++ b/synapse/rest/client/v1/base.py
@@ -27,7 +27,7 @@ import logging
 logger = logging.getLogger(__name__)
 
 
-def client_path_pattern(path_regex):
+def client_path_patterns(path_regex, releases=(0,), include_in_unstable=True):
     """Creates a regex compiled client path with the correct client path
     prefix.
 
@@ -37,7 +37,14 @@ def client_path_pattern(path_regex):
     Returns:
         SRE_Pattern
     """
-    return re.compile("^" + CLIENT_PREFIX + path_regex)
+    patterns = [re.compile("^" + CLIENT_PREFIX + path_regex)]
+    if include_in_unstable:
+        unstable_prefix = CLIENT_PREFIX.replace("/api/v1", "/unstable")
+        patterns.append(re.compile("^" + unstable_prefix + path_regex))
+    for release in releases:
+        new_prefix = CLIENT_PREFIX.replace("/api/v1", "/r%d" % release)
+        patterns.append(re.compile("^" + new_prefix + path_regex))
+    return patterns
 
 
 class ClientV1RestServlet(RestServlet):
diff --git a/synapse/rest/client/v1/directory.py b/synapse/rest/client/v1/directory.py
index 240eedac75..f488e2dd41 100644
--- a/synapse/rest/client/v1/directory.py
+++ b/synapse/rest/client/v1/directory.py
@@ -18,7 +18,7 @@ from twisted.internet import defer
 
 from synapse.api.errors import AuthError, SynapseError, Codes
 from synapse.types import RoomAlias
-from .base import ClientV1RestServlet, client_path_pattern
+from .base import ClientV1RestServlet, client_path_patterns
 
 import simplejson as json
 import logging
@@ -32,7 +32,7 @@ def register_servlets(hs, http_server):
 
 
 class ClientDirectoryServer(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/directory/room/(?P<room_alias>[^/]*)$")
+    PATTERNS = client_path_patterns("/directory/room/(?P<room_alias>[^/]*)$")
 
     @defer.inlineCallbacks
     def on_GET(self, request, room_alias):
diff --git a/synapse/rest/client/v1/events.py b/synapse/rest/client/v1/events.py
index 3e1750d1a1..41b97e7d15 100644
--- a/synapse/rest/client/v1/events.py
+++ b/synapse/rest/client/v1/events.py
@@ -18,7 +18,7 @@ from twisted.internet import defer
 
 from synapse.api.errors import SynapseError
 from synapse.streams.config import PaginationConfig
-from .base import ClientV1RestServlet, client_path_pattern
+from .base import ClientV1RestServlet, client_path_patterns
 from synapse.events.utils import serialize_event
 
 import logging
@@ -28,7 +28,7 @@ logger = logging.getLogger(__name__)
 
 
 class EventStreamRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/events$")
+    PATTERNS = client_path_patterns("/events$")
 
     DEFAULT_LONGPOLL_TIME_MS = 30000
 
@@ -72,7 +72,7 @@ class EventStreamRestServlet(ClientV1RestServlet):
 
 # TODO: Unit test gets, with and without auth, with different kinds of events.
 class EventRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/events/(?P<event_id>[^/]*)$")
+    PATTERNS = client_path_patterns("/events/(?P<event_id>[^/]*)$")
 
     def __init__(self, hs):
         super(EventRestServlet, self).__init__(hs)
diff --git a/synapse/rest/client/v1/initial_sync.py b/synapse/rest/client/v1/initial_sync.py
index 856a70f297..9ad3df8a9f 100644
--- a/synapse/rest/client/v1/initial_sync.py
+++ b/synapse/rest/client/v1/initial_sync.py
@@ -16,12 +16,12 @@
 from twisted.internet import defer
 
 from synapse.streams.config import PaginationConfig
-from base import ClientV1RestServlet, client_path_pattern
+from base import ClientV1RestServlet, client_path_patterns
 
 
 # TODO: Needs unit testing
 class InitialSyncRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/initialSync$")
+    PATTERNS = client_path_patterns("/initialSync$")
 
     @defer.inlineCallbacks
     def on_GET(self, request):
diff --git a/synapse/rest/client/v1/login.py b/synapse/rest/client/v1/login.py
index 720d6358e7..e8c35508cd 100644
--- a/synapse/rest/client/v1/login.py
+++ b/synapse/rest/client/v1/login.py
@@ -16,9 +16,8 @@
 from twisted.internet import defer
 
 from synapse.api.errors import SynapseError, LoginError, Codes
-from synapse.http.client import SimpleHttpClient
 from synapse.types import UserID
-from base import ClientV1RestServlet, client_path_pattern
+from base import ClientV1RestServlet, client_path_patterns
 
 import simplejson as json
 import urllib
@@ -36,7 +35,7 @@ logger = logging.getLogger(__name__)
 
 
 class LoginRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/login$")
+    PATTERNS = client_path_patterns("/login$")
     PASS_TYPE = "m.login.password"
     SAML2_TYPE = "m.login.saml2"
     CAS_TYPE = "m.login.cas"
@@ -51,6 +50,7 @@ class LoginRestServlet(ClientV1RestServlet):
         self.cas_server_url = hs.config.cas_server_url
         self.cas_required_attributes = hs.config.cas_required_attributes
         self.servername = hs.config.server_name
+        self.http_client = hs.get_simple_http_client()
 
     def on_GET(self, request):
         flows = []
@@ -98,15 +98,12 @@ class LoginRestServlet(ClientV1RestServlet):
             # TODO Delete this after all CAS clients switch to token login instead
             elif self.cas_enabled and (login_submission["type"] ==
                                        LoginRestServlet.CAS_TYPE):
-                # TODO: get this from the homeserver rather than creating a new one for
-                # each request
-                http_client = SimpleHttpClient(self.hs)
                 uri = "%s/proxyValidate" % (self.cas_server_url,)
                 args = {
                     "ticket": login_submission["ticket"],
                     "service": login_submission["service"]
                 }
-                body = yield http_client.get_raw(uri, args)
+                body = yield self.http_client.get_raw(uri, args)
                 result = yield self.do_cas_login(body)
                 defer.returnValue(result)
             elif login_submission["type"] == LoginRestServlet.TOKEN_TYPE:
@@ -238,7 +235,7 @@ class LoginRestServlet(ClientV1RestServlet):
 
 
 class SAML2RestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/login/saml2")
+    PATTERNS = client_path_patterns("/login/saml2", releases=())
 
     def __init__(self, hs):
         super(SAML2RestServlet, self).__init__(hs)
@@ -282,7 +279,7 @@ class SAML2RestServlet(ClientV1RestServlet):
 
 # TODO Delete this after all CAS clients switch to token login instead
 class CasRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/login/cas")
+    PATTERNS = client_path_patterns("/login/cas", releases=())
 
     def __init__(self, hs):
         super(CasRestServlet, self).__init__(hs)
@@ -293,7 +290,7 @@ class CasRestServlet(ClientV1RestServlet):
 
 
 class CasRedirectServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/login/cas/redirect")
+    PATTERNS = client_path_patterns("/login/cas/redirect", releases=())
 
     def __init__(self, hs):
         super(CasRedirectServlet, self).__init__(hs)
@@ -316,7 +313,7 @@ class CasRedirectServlet(ClientV1RestServlet):
 
 
 class CasTicketServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/login/cas/ticket")
+    PATTERNS = client_path_patterns("/login/cas/ticket", releases=())
 
     def __init__(self, hs):
         super(CasTicketServlet, self).__init__(hs)
diff --git a/synapse/rest/client/v1/presence.py b/synapse/rest/client/v1/presence.py
index 6fe5d19a22..e0949fe4bb 100644
--- a/synapse/rest/client/v1/presence.py
+++ b/synapse/rest/client/v1/presence.py
@@ -19,7 +19,7 @@ from twisted.internet import defer
 
 from synapse.api.errors import SynapseError
 from synapse.types import UserID
-from .base import ClientV1RestServlet, client_path_pattern
+from .base import ClientV1RestServlet, client_path_patterns
 
 import simplejson as json
 import logging
@@ -28,7 +28,7 @@ logger = logging.getLogger(__name__)
 
 
 class PresenceStatusRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/presence/(?P<user_id>[^/]*)/status")
+    PATTERNS = client_path_patterns("/presence/(?P<user_id>[^/]*)/status")
 
     @defer.inlineCallbacks
     def on_GET(self, request, user_id):
@@ -73,7 +73,7 @@ class PresenceStatusRestServlet(ClientV1RestServlet):
 
 
 class PresenceListRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/presence/list/(?P<user_id>[^/]*)")
+    PATTERNS = client_path_patterns("/presence/list/(?P<user_id>[^/]*)")
 
     @defer.inlineCallbacks
     def on_GET(self, request, user_id):
@@ -120,7 +120,7 @@ class PresenceListRestServlet(ClientV1RestServlet):
                 if len(u) == 0:
                     continue
                 invited_user = UserID.from_string(u)
-                yield self.handlers.presence_handler.send_invite(
+                yield self.handlers.presence_handler.send_presence_invite(
                     observer_user=user, observed_user=invited_user
                 )
 
diff --git a/synapse/rest/client/v1/profile.py b/synapse/rest/client/v1/profile.py
index 3218e47025..e6c6e5d024 100644
--- a/synapse/rest/client/v1/profile.py
+++ b/synapse/rest/client/v1/profile.py
@@ -16,14 +16,14 @@
 """ This module contains REST servlets to do with profile: /profile/<paths> """
 from twisted.internet import defer
 
-from .base import ClientV1RestServlet, client_path_pattern
+from .base import ClientV1RestServlet, client_path_patterns
 from synapse.types import UserID
 
 import simplejson as json
 
 
 class ProfileDisplaynameRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/profile/(?P<user_id>[^/]*)/displayname")
+    PATTERNS = client_path_patterns("/profile/(?P<user_id>[^/]*)/displayname")
 
     @defer.inlineCallbacks
     def on_GET(self, request, user_id):
@@ -56,7 +56,7 @@ class ProfileDisplaynameRestServlet(ClientV1RestServlet):
 
 
 class ProfileAvatarURLRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/profile/(?P<user_id>[^/]*)/avatar_url")
+    PATTERNS = client_path_patterns("/profile/(?P<user_id>[^/]*)/avatar_url")
 
     @defer.inlineCallbacks
     def on_GET(self, request, user_id):
@@ -89,7 +89,7 @@ class ProfileAvatarURLRestServlet(ClientV1RestServlet):
 
 
 class ProfileRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/profile/(?P<user_id>[^/]*)")
+    PATTERNS = client_path_patterns("/profile/(?P<user_id>[^/]*)")
 
     @defer.inlineCallbacks
     def on_GET(self, request, user_id):
diff --git a/synapse/rest/client/v1/push_rule.py b/synapse/rest/client/v1/push_rule.py
index b0870db1ac..9270bdd079 100644
--- a/synapse/rest/client/v1/push_rule.py
+++ b/synapse/rest/client/v1/push_rule.py
@@ -18,7 +18,7 @@ from twisted.internet import defer
 from synapse.api.errors import (
     SynapseError, Codes, UnrecognizedRequestError, NotFoundError, StoreError
 )
-from .base import ClientV1RestServlet, client_path_pattern
+from .base import ClientV1RestServlet, client_path_patterns
 from synapse.storage.push_rule import (
     InconsistentRuleException, RuleNotFoundException
 )
@@ -31,7 +31,7 @@ import simplejson as json
 
 
 class PushRuleRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/pushrules/.*$")
+    PATTERNS = client_path_patterns("/pushrules/.*$")
     SLIGHTLY_PEDANTIC_TRAILING_SLASH_ERROR = (
         "Unrecognised request: You probably wanted a trailing slash")
 
@@ -207,7 +207,12 @@ class PushRuleRestServlet(ClientV1RestServlet):
 
     def set_rule_attr(self, user_name, spec, val):
         if spec['attr'] == 'enabled':
+            if isinstance(val, dict) and "enabled" in val:
+                val = val["enabled"]
             if not isinstance(val, bool):
+                # Legacy fallback
+                # This should *actually* take a dict, but many clients pass
+                # bools directly, so let's not break them.
                 raise SynapseError(400, "Value for 'enabled' must be boolean")
             namespaced_rule_id = _namespaced_rule_id_from_spec(spec)
             self.hs.get_datastore().set_push_rule_enabled(
diff --git a/synapse/rest/client/v1/pusher.py b/synapse/rest/client/v1/pusher.py
index a110c0a4f0..d6d1ad528e 100644
--- a/synapse/rest/client/v1/pusher.py
+++ b/synapse/rest/client/v1/pusher.py
@@ -17,13 +17,16 @@ from twisted.internet import defer
 
 from synapse.api.errors import SynapseError, Codes
 from synapse.push import PusherConfigException
-from .base import ClientV1RestServlet, client_path_pattern
+from .base import ClientV1RestServlet, client_path_patterns
 
 import simplejson as json
+import logging
+
+logger = logging.getLogger(__name__)
 
 
 class PusherRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/pushers/set$")
+    PATTERNS = client_path_patterns("/pushers/set$")
 
     @defer.inlineCallbacks
     def on_POST(self, request):
@@ -51,6 +54,9 @@ class PusherRestServlet(ClientV1RestServlet):
             raise SynapseError(400, "Missing parameters: "+','.join(missing),
                                errcode=Codes.MISSING_PARAM)
 
+        logger.debug("set pushkey %s to kind %s", content['pushkey'], content['kind'])
+        logger.debug("Got pushers request with body: %r", content)
+
         append = False
         if 'append' in content:
             append = content['append']
diff --git a/synapse/rest/client/v1/register.py b/synapse/rest/client/v1/register.py
index a56834e365..4b02311e05 100644
--- a/synapse/rest/client/v1/register.py
+++ b/synapse/rest/client/v1/register.py
@@ -18,7 +18,7 @@ from twisted.internet import defer
 
 from synapse.api.errors import SynapseError, Codes
 from synapse.api.constants import LoginType
-from base import ClientV1RestServlet, client_path_pattern
+from base import ClientV1RestServlet, client_path_patterns
 import synapse.util.stringutils as stringutils
 
 from synapse.util.async import run_on_reactor
@@ -48,7 +48,7 @@ class RegisterRestServlet(ClientV1RestServlet):
     handler doesn't have a concept of multi-stages or sessions.
     """
 
-    PATTERN = client_path_pattern("/register$")
+    PATTERNS = client_path_patterns("/register$", releases=(), include_in_unstable=False)
 
     def __init__(self, hs):
         super(RegisterRestServlet, self).__init__(hs)
diff --git a/synapse/rest/client/v1/room.py b/synapse/rest/client/v1/room.py
index 139dac1cc3..6fe53f70e5 100644
--- a/synapse/rest/client/v1/room.py
+++ b/synapse/rest/client/v1/room.py
@@ -16,7 +16,7 @@
 """ This module contains REST servlets to do with rooms: /rooms/<paths> """
 from twisted.internet import defer
 
-from base import ClientV1RestServlet, client_path_pattern
+from base import ClientV1RestServlet, client_path_patterns
 from synapse.api.errors import SynapseError, Codes, AuthError
 from synapse.streams.config import PaginationConfig
 from synapse.api.constants import EventTypes, Membership
@@ -34,16 +34,16 @@ class RoomCreateRestServlet(ClientV1RestServlet):
     # No PATTERN; we have custom dispatch rules here
 
     def register(self, http_server):
-        PATTERN = "/createRoom"
-        register_txn_path(self, PATTERN, http_server)
+        PATTERNS = "/createRoom"
+        register_txn_path(self, PATTERNS, http_server)
         # define CORS for all of /rooms in RoomCreateRestServlet for simplicity
-        http_server.register_path("OPTIONS",
-                                  client_path_pattern("/rooms(?:/.*)?$"),
-                                  self.on_OPTIONS)
+        http_server.register_paths("OPTIONS",
+                                   client_path_patterns("/rooms(?:/.*)?$"),
+                                   self.on_OPTIONS)
         # define CORS for /createRoom[/txnid]
-        http_server.register_path("OPTIONS",
-                                  client_path_pattern("/createRoom(?:/.*)?$"),
-                                  self.on_OPTIONS)
+        http_server.register_paths("OPTIONS",
+                                   client_path_patterns("/createRoom(?:/.*)?$"),
+                                   self.on_OPTIONS)
 
     @defer.inlineCallbacks
     def on_PUT(self, request, txn_id):
@@ -103,18 +103,18 @@ class RoomStateEventRestServlet(ClientV1RestServlet):
         state_key = ("/rooms/(?P<room_id>[^/]*)/state/"
                      "(?P<event_type>[^/]*)/(?P<state_key>[^/]*)$")
 
-        http_server.register_path("GET",
-                                  client_path_pattern(state_key),
-                                  self.on_GET)
-        http_server.register_path("PUT",
-                                  client_path_pattern(state_key),
-                                  self.on_PUT)
-        http_server.register_path("GET",
-                                  client_path_pattern(no_state_key),
-                                  self.on_GET_no_state_key)
-        http_server.register_path("PUT",
-                                  client_path_pattern(no_state_key),
-                                  self.on_PUT_no_state_key)
+        http_server.register_paths("GET",
+                                   client_path_patterns(state_key),
+                                   self.on_GET)
+        http_server.register_paths("PUT",
+                                   client_path_patterns(state_key),
+                                   self.on_PUT)
+        http_server.register_paths("GET",
+                                   client_path_patterns(no_state_key),
+                                   self.on_GET_no_state_key)
+        http_server.register_paths("PUT",
+                                   client_path_patterns(no_state_key),
+                                   self.on_PUT_no_state_key)
 
     def on_GET_no_state_key(self, request, room_id, event_type):
         return self.on_GET(request, room_id, event_type, "")
@@ -170,8 +170,8 @@ class RoomSendEventRestServlet(ClientV1RestServlet):
 
     def register(self, http_server):
         # /rooms/$roomid/send/$event_type[/$txn_id]
-        PATTERN = ("/rooms/(?P<room_id>[^/]*)/send/(?P<event_type>[^/]*)")
-        register_txn_path(self, PATTERN, http_server, with_get=True)
+        PATTERNS = ("/rooms/(?P<room_id>[^/]*)/send/(?P<event_type>[^/]*)")
+        register_txn_path(self, PATTERNS, http_server, with_get=True)
 
     @defer.inlineCallbacks
     def on_POST(self, request, room_id, event_type, txn_id=None):
@@ -215,8 +215,8 @@ class JoinRoomAliasServlet(ClientV1RestServlet):
 
     def register(self, http_server):
         # /join/$room_identifier[/$txn_id]
-        PATTERN = ("/join/(?P<room_identifier>[^/]*)")
-        register_txn_path(self, PATTERN, http_server)
+        PATTERNS = ("/join/(?P<room_identifier>[^/]*)")
+        register_txn_path(self, PATTERNS, http_server)
 
     @defer.inlineCallbacks
     def on_POST(self, request, room_identifier, txn_id=None):
@@ -280,7 +280,7 @@ class JoinRoomAliasServlet(ClientV1RestServlet):
 
 # TODO: Needs unit testing
 class PublicRoomListRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/publicRooms$")
+    PATTERNS = client_path_patterns("/publicRooms$")
 
     @defer.inlineCallbacks
     def on_GET(self, request):
@@ -291,7 +291,7 @@ class PublicRoomListRestServlet(ClientV1RestServlet):
 
 # TODO: Needs unit testing
 class RoomMemberListRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/rooms/(?P<room_id>[^/]*)/members$")
+    PATTERNS = client_path_patterns("/rooms/(?P<room_id>[^/]*)/members$")
 
     @defer.inlineCallbacks
     def on_GET(self, request, room_id):
@@ -328,7 +328,7 @@ class RoomMemberListRestServlet(ClientV1RestServlet):
 
 # TODO: Needs better unit testing
 class RoomMessageListRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/rooms/(?P<room_id>[^/]*)/messages$")
+    PATTERNS = client_path_patterns("/rooms/(?P<room_id>[^/]*)/messages$")
 
     @defer.inlineCallbacks
     def on_GET(self, request, room_id):
@@ -351,7 +351,7 @@ class RoomMessageListRestServlet(ClientV1RestServlet):
 
 # TODO: Needs unit testing
 class RoomStateRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/rooms/(?P<room_id>[^/]*)/state$")
+    PATTERNS = client_path_patterns("/rooms/(?P<room_id>[^/]*)/state$")
 
     @defer.inlineCallbacks
     def on_GET(self, request, room_id):
@@ -368,7 +368,7 @@ class RoomStateRestServlet(ClientV1RestServlet):
 
 # TODO: Needs unit testing
 class RoomInitialSyncRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/rooms/(?P<room_id>[^/]*)/initialSync$")
+    PATTERNS = client_path_patterns("/rooms/(?P<room_id>[^/]*)/initialSync$")
 
     @defer.inlineCallbacks
     def on_GET(self, request, room_id):
@@ -383,32 +383,8 @@ class RoomInitialSyncRestServlet(ClientV1RestServlet):
         defer.returnValue((200, content))
 
 
-class RoomTriggerBackfill(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/rooms/(?P<room_id>[^/]*)/backfill$")
-
-    def __init__(self, hs):
-        super(RoomTriggerBackfill, self).__init__(hs)
-        self.clock = hs.get_clock()
-
-    @defer.inlineCallbacks
-    def on_GET(self, request, room_id):
-        remote_server = urllib.unquote(
-            request.args["remote"][0]
-        ).decode("UTF-8")
-
-        limit = int(request.args["limit"][0])
-
-        handler = self.handlers.federation_handler
-        events = yield handler.backfill(remote_server, room_id, limit)
-
-        time_now = self.clock.time_msec()
-
-        res = [serialize_event(event, time_now) for event in events]
-        defer.returnValue((200, res))
-
-
 class RoomEventContext(ClientV1RestServlet):
-    PATTERN = client_path_pattern(
+    PATTERNS = client_path_patterns(
         "/rooms/(?P<room_id>[^/]*)/context/(?P<event_id>[^/]*)$"
     )
 
@@ -447,9 +423,9 @@ class RoomMembershipRestServlet(ClientV1RestServlet):
 
     def register(self, http_server):
         # /rooms/$roomid/[invite|join|leave]
-        PATTERN = ("/rooms/(?P<room_id>[^/]*)/"
-                   "(?P<membership_action>join|invite|leave|ban|kick)")
-        register_txn_path(self, PATTERN, http_server)
+        PATTERNS = ("/rooms/(?P<room_id>[^/]*)/"
+                    "(?P<membership_action>join|invite|leave|ban|kick|forget)")
+        register_txn_path(self, PATTERNS, http_server)
 
     @defer.inlineCallbacks
     def on_POST(self, request, room_id, membership_action, txn_id=None):
@@ -458,6 +434,8 @@ class RoomMembershipRestServlet(ClientV1RestServlet):
             allow_guest=True
         )
 
+        effective_membership_action = membership_action
+
         if is_guest and membership_action not in {Membership.JOIN, Membership.LEAVE}:
             raise AuthError(403, "Guest access not allowed")
 
@@ -488,11 +466,13 @@ class RoomMembershipRestServlet(ClientV1RestServlet):
             UserID.from_string(state_key)
 
             if membership_action == "kick":
-                membership_action = "leave"
+                effective_membership_action = "leave"
+        elif membership_action == "forget":
+            effective_membership_action = "leave"
 
         msg_handler = self.handlers.message_handler
 
-        content = {"membership": unicode(membership_action)}
+        content = {"membership": unicode(effective_membership_action)}
         if is_guest:
             content["kind"] = "guest"
 
@@ -509,6 +489,9 @@ class RoomMembershipRestServlet(ClientV1RestServlet):
             is_guest=is_guest,
         )
 
+        if membership_action == "forget":
+            yield self.handlers.room_member_handler.forget(user, room_id)
+
         defer.returnValue((200, {}))
 
     def _has_3pid_invite_keys(self, content):
@@ -536,8 +519,8 @@ class RoomMembershipRestServlet(ClientV1RestServlet):
 
 class RoomRedactEventRestServlet(ClientV1RestServlet):
     def register(self, http_server):
-        PATTERN = ("/rooms/(?P<room_id>[^/]*)/redact/(?P<event_id>[^/]*)")
-        register_txn_path(self, PATTERN, http_server)
+        PATTERNS = ("/rooms/(?P<room_id>[^/]*)/redact/(?P<event_id>[^/]*)")
+        register_txn_path(self, PATTERNS, http_server)
 
     @defer.inlineCallbacks
     def on_POST(self, request, room_id, event_id, txn_id=None):
@@ -575,7 +558,7 @@ class RoomRedactEventRestServlet(ClientV1RestServlet):
 
 
 class RoomTypingRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern(
+    PATTERNS = client_path_patterns(
         "/rooms/(?P<room_id>[^/]*)/typing/(?P<user_id>[^/]*)$"
     )
 
@@ -608,7 +591,7 @@ class RoomTypingRestServlet(ClientV1RestServlet):
 
 
 class SearchRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern(
+    PATTERNS = client_path_patterns(
         "/search$"
     )
 
@@ -648,20 +631,20 @@ def register_txn_path(servlet, regex_string, http_server, with_get=False):
         http_server : The http_server to register paths with.
         with_get: True to also register respective GET paths for the PUTs.
     """
-    http_server.register_path(
+    http_server.register_paths(
         "POST",
-        client_path_pattern(regex_string + "$"),
+        client_path_patterns(regex_string + "$"),
         servlet.on_POST
     )
-    http_server.register_path(
+    http_server.register_paths(
         "PUT",
-        client_path_pattern(regex_string + "/(?P<txn_id>[^/]*)$"),
+        client_path_patterns(regex_string + "/(?P<txn_id>[^/]*)$"),
         servlet.on_PUT
     )
     if with_get:
-        http_server.register_path(
+        http_server.register_paths(
             "GET",
-            client_path_pattern(regex_string + "/(?P<txn_id>[^/]*)$"),
+            client_path_patterns(regex_string + "/(?P<txn_id>[^/]*)$"),
             servlet.on_GET
         )
 
@@ -672,7 +655,6 @@ def register_servlets(hs, http_server):
     RoomMemberListRestServlet(hs).register(http_server)
     RoomMessageListRestServlet(hs).register(http_server)
     JoinRoomAliasServlet(hs).register(http_server)
-    RoomTriggerBackfill(hs).register(http_server)
     RoomMembershipRestServlet(hs).register(http_server)
     RoomSendEventRestServlet(hs).register(http_server)
     PublicRoomListRestServlet(hs).register(http_server)
diff --git a/synapse/rest/client/v1/voip.py b/synapse/rest/client/v1/voip.py
index eb7c57cade..1567a03c89 100644
--- a/synapse/rest/client/v1/voip.py
+++ b/synapse/rest/client/v1/voip.py
@@ -15,7 +15,7 @@
 
 from twisted.internet import defer
 
-from base import ClientV1RestServlet, client_path_pattern
+from base import ClientV1RestServlet, client_path_patterns
 
 
 import hmac
@@ -24,7 +24,7 @@ import base64
 
 
 class VoipRestServlet(ClientV1RestServlet):
-    PATTERN = client_path_pattern("/voip/turnServer$")
+    PATTERNS = client_path_patterns("/voip/turnServer$")
 
     @defer.inlineCallbacks
     def on_GET(self, request):
diff --git a/synapse/rest/client/v2_alpha/__init__.py b/synapse/rest/client/v2_alpha/__init__.py
index a108132346..c488b10d3c 100644
--- a/synapse/rest/client/v2_alpha/__init__.py
+++ b/synapse/rest/client/v2_alpha/__init__.py
@@ -12,37 +12,3 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-
-from . import (
-    sync,
-    filter,
-    account,
-    register,
-    auth,
-    receipts,
-    keys,
-    tokenrefresh,
-    tags,
-)
-
-from synapse.http.server import JsonResource
-
-
-class ClientV2AlphaRestResource(JsonResource):
-    """A resource for version 2 alpha of the matrix client API."""
-
-    def __init__(self, hs):
-        JsonResource.__init__(self, hs, canonical_json=False)
-        self.register_servlets(self, hs)
-
-    @staticmethod
-    def register_servlets(client_resource, hs):
-        sync.register_servlets(hs, client_resource)
-        filter.register_servlets(hs, client_resource)
-        account.register_servlets(hs, client_resource)
-        register.register_servlets(hs, client_resource)
-        auth.register_servlets(hs, client_resource)
-        receipts.register_servlets(hs, client_resource)
-        keys.register_servlets(hs, client_resource)
-        tokenrefresh.register_servlets(hs, client_resource)
-        tags.register_servlets(hs, client_resource)
diff --git a/synapse/rest/client/v2_alpha/_base.py b/synapse/rest/client/v2_alpha/_base.py
index 4540e8dcf7..7b8b879c03 100644
--- a/synapse/rest/client/v2_alpha/_base.py
+++ b/synapse/rest/client/v2_alpha/_base.py
@@ -27,7 +27,7 @@ import simplejson
 logger = logging.getLogger(__name__)
 
 
-def client_v2_pattern(path_regex):
+def client_v2_patterns(path_regex, releases=(0,)):
     """Creates a regex compiled client path with the correct client path
     prefix.
 
@@ -37,7 +37,13 @@ def client_v2_pattern(path_regex):
     Returns:
         SRE_Pattern
     """
-    return re.compile("^" + CLIENT_V2_ALPHA_PREFIX + path_regex)
+    patterns = [re.compile("^" + CLIENT_V2_ALPHA_PREFIX + path_regex)]
+    unstable_prefix = CLIENT_V2_ALPHA_PREFIX.replace("/v2_alpha", "/unstable")
+    patterns.append(re.compile("^" + unstable_prefix + path_regex))
+    for release in releases:
+        new_prefix = CLIENT_V2_ALPHA_PREFIX.replace("/v2_alpha", "/r%d" % release)
+        patterns.append(re.compile("^" + new_prefix + path_regex))
+    return patterns
 
 
 def parse_request_allow_empty(request):
diff --git a/synapse/rest/client/v2_alpha/account.py b/synapse/rest/client/v2_alpha/account.py
index 1970ad3458..3e1459d5b9 100644
--- a/synapse/rest/client/v2_alpha/account.py
+++ b/synapse/rest/client/v2_alpha/account.py
@@ -20,7 +20,7 @@ from synapse.api.errors import LoginError, SynapseError, Codes
 from synapse.http.servlet import RestServlet
 from synapse.util.async import run_on_reactor
 
-from ._base import client_v2_pattern, parse_json_dict_from_request
+from ._base import client_v2_patterns, parse_json_dict_from_request
 
 import logging
 
@@ -29,7 +29,7 @@ logger = logging.getLogger(__name__)
 
 
 class PasswordRestServlet(RestServlet):
-    PATTERN = client_v2_pattern("/account/password")
+    PATTERNS = client_v2_patterns("/account/password")
 
     def __init__(self, hs):
         super(PasswordRestServlet, self).__init__()
@@ -89,7 +89,7 @@ class PasswordRestServlet(RestServlet):
 
 
 class ThreepidRestServlet(RestServlet):
-    PATTERN = client_v2_pattern("/account/3pid")
+    PATTERNS = client_v2_patterns("/account/3pid")
 
     def __init__(self, hs):
         super(ThreepidRestServlet, self).__init__()
diff --git a/synapse/rest/client/v2_alpha/account_data.py b/synapse/rest/client/v2_alpha/account_data.py
new file mode 100644
index 0000000000..5b8f454bf1
--- /dev/null
+++ b/synapse/rest/client/v2_alpha/account_data.py
@@ -0,0 +1,111 @@
+# -*- coding: utf-8 -*-
+# Copyright 2015 OpenMarket Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from ._base import client_v2_patterns
+
+from synapse.http.servlet import RestServlet
+from synapse.api.errors import AuthError, SynapseError
+
+from twisted.internet import defer
+
+import logging
+
+import simplejson as json
+
+logger = logging.getLogger(__name__)
+
+
+class AccountDataServlet(RestServlet):
+    """
+    PUT /user/{user_id}/account_data/{account_dataType} HTTP/1.1
+    """
+    PATTERNS = client_v2_patterns(
+        "/user/(?P<user_id>[^/]*)/account_data/(?P<account_data_type>[^/]*)"
+    )
+
+    def __init__(self, hs):
+        super(AccountDataServlet, self).__init__()
+        self.auth = hs.get_auth()
+        self.store = hs.get_datastore()
+        self.notifier = hs.get_notifier()
+
+    @defer.inlineCallbacks
+    def on_PUT(self, request, user_id, account_data_type):
+        auth_user, _, _ = yield self.auth.get_user_by_req(request)
+        if user_id != auth_user.to_string():
+            raise AuthError(403, "Cannot add account data for other users.")
+
+        try:
+            content_bytes = request.content.read()
+            body = json.loads(content_bytes)
+        except:
+            raise SynapseError(400, "Invalid JSON")
+
+        max_id = yield self.store.add_account_data_for_user(
+            user_id, account_data_type, body
+        )
+
+        yield self.notifier.on_new_event(
+            "account_data_key", max_id, users=[user_id]
+        )
+
+        defer.returnValue((200, {}))
+
+
+class RoomAccountDataServlet(RestServlet):
+    """
+    PUT /user/{user_id}/rooms/{room_id}/account_data/{account_dataType} HTTP/1.1
+    """
+    PATTERNS = client_v2_patterns(
+        "/user/(?P<user_id>[^/]*)"
+        "/rooms/(?P<room_id>[^/]*)"
+        "/account_data/(?P<account_data_type>[^/]*)"
+    )
+
+    def __init__(self, hs):
+        super(RoomAccountDataServlet, self).__init__()
+        self.auth = hs.get_auth()
+        self.store = hs.get_datastore()
+        self.notifier = hs.get_notifier()
+
+    @defer.inlineCallbacks
+    def on_PUT(self, request, user_id, room_id, account_data_type):
+        auth_user, _, _ = yield self.auth.get_user_by_req(request)
+        if user_id != auth_user.to_string():
+            raise AuthError(403, "Cannot add account data for other users.")
+
+        try:
+            content_bytes = request.content.read()
+            body = json.loads(content_bytes)
+        except:
+            raise SynapseError(400, "Invalid JSON")
+
+        if not isinstance(body, dict):
+            raise ValueError("Expected a JSON object")
+
+        max_id = yield self.store.add_account_data_to_room(
+            user_id, room_id, account_data_type, body
+        )
+
+        yield self.notifier.on_new_event(
+            "account_data_key", max_id, users=[user_id]
+        )
+
+        defer.returnValue((200, {}))
+
+
+def register_servlets(hs, http_server):
+    AccountDataServlet(hs).register(http_server)
+    RoomAccountDataServlet(hs).register(http_server)
diff --git a/synapse/rest/client/v2_alpha/auth.py b/synapse/rest/client/v2_alpha/auth.py
index 4c726f05f5..fb5947a141 100644
--- a/synapse/rest/client/v2_alpha/auth.py
+++ b/synapse/rest/client/v2_alpha/auth.py
@@ -20,7 +20,7 @@ from synapse.api.errors import SynapseError
 from synapse.api.urls import CLIENT_V2_ALPHA_PREFIX
 from synapse.http.servlet import RestServlet
 
-from ._base import client_v2_pattern
+from ._base import client_v2_patterns
 
 import logging
 
@@ -97,7 +97,7 @@ class AuthRestServlet(RestServlet):
     cannot be handled in the normal flow (with requests to the same endpoint).
     Current use is for web fallback auth.
     """
-    PATTERN = client_v2_pattern("/auth/(?P<stagetype>[\w\.]*)/fallback/web")
+    PATTERNS = client_v2_patterns("/auth/(?P<stagetype>[\w\.]*)/fallback/web")
 
     def __init__(self, hs):
         super(AuthRestServlet, self).__init__()
diff --git a/synapse/rest/client/v2_alpha/filter.py b/synapse/rest/client/v2_alpha/filter.py
index 97956a4b91..3cd0364b56 100644
--- a/synapse/rest/client/v2_alpha/filter.py
+++ b/synapse/rest/client/v2_alpha/filter.py
@@ -19,7 +19,7 @@ from synapse.api.errors import AuthError, SynapseError
 from synapse.http.servlet import RestServlet
 from synapse.types import UserID
 
-from ._base import client_v2_pattern
+from ._base import client_v2_patterns
 
 import simplejson as json
 import logging
@@ -29,7 +29,7 @@ logger = logging.getLogger(__name__)
 
 
 class GetFilterRestServlet(RestServlet):
-    PATTERN = client_v2_pattern("/user/(?P<user_id>[^/]*)/filter/(?P<filter_id>[^/]*)")
+    PATTERNS = client_v2_patterns("/user/(?P<user_id>[^/]*)/filter/(?P<filter_id>[^/]*)")
 
     def __init__(self, hs):
         super(GetFilterRestServlet, self).__init__()
@@ -65,7 +65,7 @@ class GetFilterRestServlet(RestServlet):
 
 
 class CreateFilterRestServlet(RestServlet):
-    PATTERN = client_v2_pattern("/user/(?P<user_id>[^/]*)/filter")
+    PATTERNS = client_v2_patterns("/user/(?P<user_id>[^/]*)/filter")
 
     def __init__(self, hs):
         super(CreateFilterRestServlet, self).__init__()
diff --git a/synapse/rest/client/v2_alpha/keys.py b/synapse/rest/client/v2_alpha/keys.py
index 820d33336f..753f2988a1 100644
--- a/synapse/rest/client/v2_alpha/keys.py
+++ b/synapse/rest/client/v2_alpha/keys.py
@@ -21,7 +21,7 @@ from synapse.types import UserID
 
 from canonicaljson import encode_canonical_json
 
-from ._base import client_v2_pattern
+from ._base import client_v2_patterns
 
 import simplejson as json
 import logging
@@ -54,7 +54,7 @@ class KeyUploadServlet(RestServlet):
       },
     }
     """
-    PATTERN = client_v2_pattern("/keys/upload/(?P<device_id>[^/]*)")
+    PATTERNS = client_v2_patterns("/keys/upload/(?P<device_id>[^/]*)", releases=())
 
     def __init__(self, hs):
         super(KeyUploadServlet, self).__init__()
@@ -154,12 +154,13 @@ class KeyQueryServlet(RestServlet):
     } } } } } }
     """
 
-    PATTERN = client_v2_pattern(
+    PATTERNS = client_v2_patterns(
         "/keys/query(?:"
         "/(?P<user_id>[^/]*)(?:"
         "/(?P<device_id>[^/]*)"
         ")?"
-        ")?"
+        ")?",
+        releases=()
     )
 
     def __init__(self, hs):
@@ -245,10 +246,11 @@ class OneTimeKeyServlet(RestServlet):
     } } } }
 
     """
-    PATTERN = client_v2_pattern(
+    PATTERNS = client_v2_patterns(
         "/keys/claim(?:/?|(?:/"
         "(?P<user_id>[^/]*)/(?P<device_id>[^/]*)/(?P<algorithm>[^/]*)"
-        ")?)"
+        ")?)",
+        releases=()
     )
 
     def __init__(self, hs):
diff --git a/synapse/rest/client/v2_alpha/receipts.py b/synapse/rest/client/v2_alpha/receipts.py
index 788acd4adb..aa214e13b6 100644
--- a/synapse/rest/client/v2_alpha/receipts.py
+++ b/synapse/rest/client/v2_alpha/receipts.py
@@ -17,7 +17,7 @@ from twisted.internet import defer
 
 from synapse.api.errors import SynapseError
 from synapse.http.servlet import RestServlet
-from ._base import client_v2_pattern
+from ._base import client_v2_patterns
 
 import logging
 
@@ -26,7 +26,7 @@ logger = logging.getLogger(__name__)
 
 
 class ReceiptRestServlet(RestServlet):
-    PATTERN = client_v2_pattern(
+    PATTERNS = client_v2_patterns(
         "/rooms/(?P<room_id>[^/]*)"
         "/receipt/(?P<receipt_type>[^/]*)"
         "/(?P<event_id>[^/]*)$"
diff --git a/synapse/rest/client/v2_alpha/register.py b/synapse/rest/client/v2_alpha/register.py
index f899376311..b2b89652c6 100644
--- a/synapse/rest/client/v2_alpha/register.py
+++ b/synapse/rest/client/v2_alpha/register.py
@@ -19,7 +19,7 @@ from synapse.api.constants import LoginType
 from synapse.api.errors import SynapseError, Codes, UnrecognizedRequestError
 from synapse.http.servlet import RestServlet
 
-from ._base import client_v2_pattern, parse_json_dict_from_request
+from ._base import client_v2_patterns, parse_json_dict_from_request
 
 import logging
 import hmac
@@ -41,7 +41,7 @@ logger = logging.getLogger(__name__)
 
 
 class RegisterRestServlet(RestServlet):
-    PATTERN = client_v2_pattern("/register")
+    PATTERNS = client_v2_patterns("/register")
 
     def __init__(self, hs):
         super(RegisterRestServlet, self).__init__()
diff --git a/synapse/rest/client/v2_alpha/sync.py b/synapse/rest/client/v2_alpha/sync.py
index 775f49885b..35a70ffad1 100644
--- a/synapse/rest/client/v2_alpha/sync.py
+++ b/synapse/rest/client/v2_alpha/sync.py
@@ -25,11 +25,14 @@ from synapse.events.utils import (
     serialize_event, format_event_for_client_v2_without_room_id,
 )
 from synapse.api.filtering import FilterCollection
-from ._base import client_v2_pattern
+from synapse.api.errors import SynapseError
+from ._base import client_v2_patterns
 
 import copy
 import logging
 
+import ujson as json
+
 logger = logging.getLogger(__name__)
 
 
@@ -48,7 +51,7 @@ class SyncRestServlet(RestServlet):
           "next_batch": // batch token for the next /sync
           "presence": // presence data for the user.
           "rooms": {
-            "joined": { // Joined rooms being updated.
+            "join": { // Joined rooms being updated.
               "${room_id}": { // Id of the room being updated
                 "event_map": // Map of EventID -> event JSON.
                 "timeline": { // The recent events in the room if gap is "true"
@@ -63,13 +66,13 @@ class SyncRestServlet(RestServlet):
                 "ephemeral": {"events": []} // list of event objects
               }
             },
-            "invited": {}, // Invited rooms being updated.
-            "archived": {} // Archived rooms being updated.
+            "invite": {}, // Invited rooms being updated.
+            "leave": {} // Archived rooms being updated.
           }
         }
     """
 
-    PATTERN = client_v2_pattern("/sync$")
+    PATTERNS = client_v2_patterns("/sync$")
     ALLOWED_PRESENCE = set(["online", "offline"])
 
     def __init__(self, hs):
@@ -82,7 +85,9 @@ class SyncRestServlet(RestServlet):
 
     @defer.inlineCallbacks
     def on_GET(self, request):
-        user, token_id, _ = yield self.auth.get_user_by_req(request)
+        user, token_id, is_guest = yield self.auth.get_user_by_req(
+            request, allow_guest=True
+        )
 
         timeout = parse_integer(request, "timeout", default=0)
         since = parse_string(request, "since")
@@ -100,15 +105,29 @@ class SyncRestServlet(RestServlet):
             )
         )
 
-        try:
-            filter = yield self.filtering.get_user_filter(
-                user.localpart, filter_id
+        if filter_id and filter_id.startswith('{'):
+            try:
+                filter_object = json.loads(filter_id)
+            except:
+                raise SynapseError(400, "Invalid filter JSON")
+            self.filtering._check_valid_filter(filter_object)
+            filter = FilterCollection(filter_object)
+        else:
+            try:
+                filter = yield self.filtering.get_user_filter(
+                    user.localpart, filter_id
+                )
+            except:
+                filter = FilterCollection({})
+
+        if is_guest and filter.list_rooms() is None:
+            raise SynapseError(
+                400, "Guest users must provide a list of rooms in the filter"
             )
-        except:
-            filter = FilterCollection({})
 
         sync_config = SyncConfig(
             user=user,
+            is_guest=is_guest,
             filter=filter,
         )
 
@@ -144,6 +163,9 @@ class SyncRestServlet(RestServlet):
         )
 
         response_content = {
+            "account_data": self.encode_account_data(
+                sync_result.account_data, filter, time_now
+            ),
             "presence": self.encode_presence(
                 sync_result.presence, filter, time_now
             ),
@@ -165,6 +187,9 @@ class SyncRestServlet(RestServlet):
             formatted.append(event)
         return {"events": filter.filter_presence(formatted)}
 
+    def encode_account_data(self, events, filter, time_now):
+        return {"events": filter.filter_account_data(events)}
+
     def encode_joined(self, rooms, filter, time_now, token_id):
         """
         Encode the joined rooms in a sync result
@@ -333,20 +358,36 @@ class SyncRestServlet(RestServlet):
                 continue
 
             prev_event_id = timeline_event.unsigned.get("replaces_state", None)
-            logger.debug("Replacing %s with %s in state dict",
-                         timeline_event.event_id, prev_event_id)
 
-            if prev_event_id is None:
+            prev_content = timeline_event.unsigned.get('prev_content')
+            prev_sender = timeline_event.unsigned.get('prev_sender')
+            # Empircally it seems possible for the event to have a
+            # "replaces_state" key but not a prev_content or prev_sender
+            # markjh conjectures that it could be due to the server not
+            # having a copy of that event.
+            # If this is the case the we ignore the previous event. This will
+            # cause the displayname calculations on the client to be incorrect
+            if prev_event_id is None or not prev_content or not prev_sender:
+                logger.debug(
+                    "Removing %r from the state dict, as it is missing"
+                    " prev_content (prev_event_id=%r)",
+                    timeline_event.event_id, prev_event_id
+                )
                 del result[event_key]
             else:
+                logger.debug(
+                    "Replacing %r with %r in state dict",
+                    timeline_event.event_id, prev_event_id
+                )
                 result[event_key] = FrozenEvent({
                     "type": timeline_event.type,
                     "state_key": timeline_event.state_key,
-                    "content": timeline_event.unsigned['prev_content'],
-                    "sender": timeline_event.unsigned['prev_sender'],
+                    "content": prev_content,
+                    "sender": prev_sender,
                     "event_id": prev_event_id,
                     "room_id": timeline_event.room_id,
                 })
+
             logger.debug("New value: %r", result.get(event_key))
 
         return result
diff --git a/synapse/rest/client/v2_alpha/tags.py b/synapse/rest/client/v2_alpha/tags.py
index ba7223be11..b5d0db5569 100644
--- a/synapse/rest/client/v2_alpha/tags.py
+++ b/synapse/rest/client/v2_alpha/tags.py
@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from ._base import client_v2_pattern
+from ._base import client_v2_patterns
 
 from synapse.http.servlet import RestServlet
 from synapse.api.errors import AuthError, SynapseError
@@ -31,7 +31,7 @@ class TagListServlet(RestServlet):
     """
     GET /user/{user_id}/rooms/{room_id}/tags HTTP/1.1
     """
-    PATTERN = client_v2_pattern(
+    PATTERNS = client_v2_patterns(
         "/user/(?P<user_id>[^/]*)/rooms/(?P<room_id>[^/]*)/tags"
     )
 
@@ -56,7 +56,7 @@ class TagServlet(RestServlet):
     PUT /user/{user_id}/rooms/{room_id}/tags/{tag} HTTP/1.1
     DELETE /user/{user_id}/rooms/{room_id}/tags/{tag} HTTP/1.1
     """
-    PATTERN = client_v2_pattern(
+    PATTERNS = client_v2_patterns(
         "/user/(?P<user_id>[^/]*)/rooms/(?P<room_id>[^/]*)/tags/(?P<tag>[^/]*)"
     )
 
diff --git a/synapse/rest/client/v2_alpha/tokenrefresh.py b/synapse/rest/client/v2_alpha/tokenrefresh.py
index 901e777983..5a63afd51e 100644
--- a/synapse/rest/client/v2_alpha/tokenrefresh.py
+++ b/synapse/rest/client/v2_alpha/tokenrefresh.py
@@ -18,7 +18,7 @@ from twisted.internet import defer
 from synapse.api.errors import AuthError, StoreError, SynapseError
 from synapse.http.servlet import RestServlet
 
-from ._base import client_v2_pattern, parse_json_dict_from_request
+from ._base import client_v2_patterns, parse_json_dict_from_request
 
 
 class TokenRefreshRestServlet(RestServlet):
@@ -26,7 +26,7 @@ class TokenRefreshRestServlet(RestServlet):
     Exchanges refresh tokens for a pair of an access token and a new refresh
     token.
     """
-    PATTERN = client_v2_pattern("/tokenrefresh")
+    PATTERNS = client_v2_patterns("/tokenrefresh")
 
     def __init__(self, hs):
         super(TokenRefreshRestServlet, self).__init__()
diff --git a/synapse/server.py b/synapse/server.py
index f75d5358b2..f5c8329873 100644
--- a/synapse/server.py
+++ b/synapse/server.py
@@ -71,8 +71,7 @@ class BaseHomeServer(object):
         'state_handler',
         'notifier',
         'distributor',
-        'resource_for_client',
-        'resource_for_client_v2_alpha',
+        'client_resource',
         'resource_for_federation',
         'resource_for_static_content',
         'resource_for_web_client',
diff --git a/synapse/storage/__init__.py b/synapse/storage/__init__.py
index e7443f2838..c46b653f11 100644
--- a/synapse/storage/__init__.py
+++ b/synapse/storage/__init__.py
@@ -42,6 +42,7 @@ from .end_to_end_keys import EndToEndKeyStore
 from .receipts import ReceiptsStore
 from .search import SearchStore
 from .tags import TagsStore
+from .account_data import AccountDataStore
 
 
 import logging
@@ -73,6 +74,7 @@ class DataStore(RoomMemberStore, RoomStore,
                 EndToEndKeyStore,
                 SearchStore,
                 TagsStore,
+                AccountDataStore,
                 ):
 
     def __init__(self, hs):
diff --git a/synapse/storage/_base.py b/synapse/storage/_base.py
index 218e708054..17a14e001c 100644
--- a/synapse/storage/_base.py
+++ b/synapse/storage/_base.py
@@ -214,7 +214,8 @@ class SQLBaseStore(object):
 
         self._clock.looping_call(loop, 10000)
 
-    def _new_transaction(self, conn, desc, after_callbacks, func, *args, **kwargs):
+    def _new_transaction(self, conn, desc, after_callbacks, logging_context,
+                         func, *args, **kwargs):
         start = time.time() * 1000
         txn_id = self._TXN_ID
 
@@ -277,6 +278,9 @@ class SQLBaseStore(object):
             end = time.time() * 1000
             duration = end - start
 
+            if logging_context is not None:
+                logging_context.add_database_transaction(duration)
+
             transaction_logger.debug("[TXN END] {%s} %f", name, duration)
 
             self._current_txn_total_time += duration
@@ -302,7 +306,8 @@ class SQLBaseStore(object):
 
                 current_context.copy_to(context)
                 return self._new_transaction(
-                    conn, desc, after_callbacks, func, *args, **kwargs
+                    conn, desc, after_callbacks, current_context,
+                    func, *args, **kwargs
                 )
 
         result = yield preserve_context_over_fn(
diff --git a/synapse/storage/account_data.py b/synapse/storage/account_data.py
new file mode 100644
index 0000000000..d1829f84e8
--- /dev/null
+++ b/synapse/storage/account_data.py
@@ -0,0 +1,211 @@
+# -*- coding: utf-8 -*-
+# Copyright 2014, 2015 OpenMarket Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from ._base import SQLBaseStore
+from twisted.internet import defer
+
+import ujson as json
+import logging
+
+logger = logging.getLogger(__name__)
+
+
+class AccountDataStore(SQLBaseStore):
+
+    def get_account_data_for_user(self, user_id):
+        """Get all the client account_data for a user.
+
+        Args:
+            user_id(str): The user to get the account_data for.
+        Returns:
+            A deferred pair of a dict of global account_data and a dict
+            mapping from room_id string to per room account_data dicts.
+        """
+
+        def get_account_data_for_user_txn(txn):
+            rows = self._simple_select_list_txn(
+                txn, "account_data", {"user_id": user_id},
+                ["account_data_type", "content"]
+            )
+
+            global_account_data = {
+                row["account_data_type"]: json.loads(row["content"]) for row in rows
+            }
+
+            rows = self._simple_select_list_txn(
+                txn, "room_account_data", {"user_id": user_id},
+                ["room_id", "account_data_type", "content"]
+            )
+
+            by_room = {}
+            for row in rows:
+                room_data = by_room.setdefault(row["room_id"], {})
+                room_data[row["account_data_type"]] = json.loads(row["content"])
+
+            return (global_account_data, by_room)
+
+        return self.runInteraction(
+            "get_account_data_for_user", get_account_data_for_user_txn
+        )
+
+    def get_account_data_for_room(self, user_id, room_id):
+        """Get all the client account_data for a user for a room.
+
+        Args:
+            user_id(str): The user to get the account_data for.
+            room_id(str): The room to get the account_data for.
+        Returns:
+            A deferred dict of the room account_data
+        """
+        def get_account_data_for_room_txn(txn):
+            rows = self._simple_select_list_txn(
+                txn, "room_account_data", {"user_id": user_id, "room_id": room_id},
+                ["account_data_type", "content"]
+            )
+
+            return {
+                row["account_data_type"]: json.loads(row["content"]) for row in rows
+            }
+
+        return self.runInteraction(
+            "get_account_data_for_room", get_account_data_for_room_txn
+        )
+
+    def get_updated_account_data_for_user(self, user_id, stream_id):
+        """Get all the client account_data for a that's changed.
+
+        Args:
+            user_id(str): The user to get the account_data for.
+            stream_id(int): The point in the stream since which to get updates
+        Returns:
+            A deferred pair of a dict of global account_data and a dict
+            mapping from room_id string to per room account_data dicts.
+        """
+
+        def get_updated_account_data_for_user_txn(txn):
+            sql = (
+                "SELECT account_data_type, content FROM account_data"
+                " WHERE user_id = ? AND stream_id > ?"
+            )
+
+            txn.execute(sql, (user_id, stream_id))
+
+            global_account_data = {
+                row[0]: json.loads(row[1]) for row in txn.fetchall()
+            }
+
+            sql = (
+                "SELECT room_id, account_data_type, content FROM room_account_data"
+                " WHERE user_id = ? AND stream_id > ?"
+            )
+
+            txn.execute(sql, (user_id, stream_id))
+
+            account_data_by_room = {}
+            for row in txn.fetchall():
+                room_account_data = account_data_by_room.setdefault(row[0], {})
+                room_account_data[row[1]] = json.loads(row[2])
+
+            return (global_account_data, account_data_by_room)
+
+        return self.runInteraction(
+            "get_updated_account_data_for_user", get_updated_account_data_for_user_txn
+        )
+
+    @defer.inlineCallbacks
+    def add_account_data_to_room(self, user_id, room_id, account_data_type, content):
+        """Add some account_data to a room for a user.
+        Args:
+            user_id(str): The user to add a tag for.
+            room_id(str): The room to add a tag for.
+            account_data_type(str): The type of account_data to add.
+            content(dict): A json object to associate with the tag.
+        Returns:
+            A deferred that completes once the account_data has been added.
+        """
+        content_json = json.dumps(content)
+
+        def add_account_data_txn(txn, next_id):
+            self._simple_upsert_txn(
+                txn,
+                table="room_account_data",
+                keyvalues={
+                    "user_id": user_id,
+                    "room_id": room_id,
+                    "account_data_type": account_data_type,
+                },
+                values={
+                    "stream_id": next_id,
+                    "content": content_json,
+                }
+            )
+            self._update_max_stream_id(txn, next_id)
+
+        with (yield self._account_data_id_gen.get_next(self)) as next_id:
+            yield self.runInteraction(
+                "add_room_account_data", add_account_data_txn, next_id
+            )
+
+        result = yield self._account_data_id_gen.get_max_token(self)
+        defer.returnValue(result)
+
+    @defer.inlineCallbacks
+    def add_account_data_for_user(self, user_id, account_data_type, content):
+        """Add some account_data to a room for a user.
+        Args:
+            user_id(str): The user to add a tag for.
+            account_data_type(str): The type of account_data to add.
+            content(dict): A json object to associate with the tag.
+        Returns:
+            A deferred that completes once the account_data has been added.
+        """
+        content_json = json.dumps(content)
+
+        def add_account_data_txn(txn, next_id):
+            self._simple_upsert_txn(
+                txn,
+                table="account_data",
+                keyvalues={
+                    "user_id": user_id,
+                    "account_data_type": account_data_type,
+                },
+                values={
+                    "stream_id": next_id,
+                    "content": content_json,
+                }
+            )
+            self._update_max_stream_id(txn, next_id)
+
+        with (yield self._account_data_id_gen.get_next(self)) as next_id:
+            yield self.runInteraction(
+                "add_user_account_data", add_account_data_txn, next_id
+            )
+
+        result = yield self._account_data_id_gen.get_max_token(self)
+        defer.returnValue(result)
+
+    def _update_max_stream_id(self, txn, next_id):
+        """Update the max stream_id
+
+        Args:
+            txn: The database cursor
+            next_id(int): The the revision to advance to.
+        """
+        update_max_id_sql = (
+            "UPDATE account_data_max_stream_id"
+            " SET stream_id = ?"
+            " WHERE stream_id < ?"
+        )
+        txn.execute(update_max_id_sql, (next_id, next_id))
diff --git a/synapse/storage/events.py b/synapse/storage/events.py
index 5d35ca90b9..fc5725097c 100644
--- a/synapse/storage/events.py
+++ b/synapse/storage/events.py
@@ -51,6 +51,14 @@ EVENT_QUEUE_TIMEOUT_S = 0.1  # Timeout when waiting for requests for events
 
 
 class EventsStore(SQLBaseStore):
+    EVENT_ORIGIN_SERVER_TS_NAME = "event_origin_server_ts"
+
+    def __init__(self, hs):
+        super(EventsStore, self).__init__(hs)
+        self.register_background_update_handler(
+            self.EVENT_ORIGIN_SERVER_TS_NAME, self._background_reindex_origin_server_ts
+        )
+
     @defer.inlineCallbacks
     def persist_events(self, events_and_contexts, backfilled=False,
                        is_new_state=True):
@@ -365,6 +373,7 @@ class EventsStore(SQLBaseStore):
                     "processed": True,
                     "outlier": event.internal_metadata.is_outlier(),
                     "content": encode_json(event.content).decode("UTF-8"),
+                    "origin_server_ts": int(event.origin_server_ts),
                 }
                 for event, _ in events_and_contexts
             ],
@@ -640,7 +649,7 @@ class EventsStore(SQLBaseStore):
                 ]
 
                 rows = self._new_transaction(
-                    conn, "do_fetch", [], self._fetch_event_rows, event_ids
+                    conn, "do_fetch", [], None, self._fetch_event_rows, event_ids
                 )
 
                 row_dict = {
@@ -964,3 +973,71 @@ class EventsStore(SQLBaseStore):
 
         ret = yield self.runInteraction("count_messages", _count_messages)
         defer.returnValue(ret)
+
+    @defer.inlineCallbacks
+    def _background_reindex_origin_server_ts(self, progress, batch_size):
+        target_min_stream_id = progress["target_min_stream_id_inclusive"]
+        max_stream_id = progress["max_stream_id_exclusive"]
+        rows_inserted = progress.get("rows_inserted", 0)
+
+        INSERT_CLUMP_SIZE = 1000
+
+        def reindex_search_txn(txn):
+            sql = (
+                "SELECT stream_ordering, event_id FROM events"
+                " WHERE ? <= stream_ordering AND stream_ordering < ?"
+                " ORDER BY stream_ordering DESC"
+                " LIMIT ?"
+            )
+
+            txn.execute(sql, (target_min_stream_id, max_stream_id, batch_size))
+
+            rows = txn.fetchall()
+            if not rows:
+                return 0
+
+            min_stream_id = rows[-1][0]
+            event_ids = [row[1] for row in rows]
+
+            events = self._get_events_txn(txn, event_ids)
+
+            rows = []
+            for event in events:
+                try:
+                    event_id = event.event_id
+                    origin_server_ts = event.origin_server_ts
+                except (KeyError, AttributeError):
+                    # If the event is missing a necessary field then
+                    # skip over it.
+                    continue
+
+                rows.append((origin_server_ts, event_id))
+
+            sql = (
+                "UPDATE events SET origin_server_ts = ? WHERE event_id = ?"
+            )
+
+            for index in range(0, len(rows), INSERT_CLUMP_SIZE):
+                clump = rows[index:index + INSERT_CLUMP_SIZE]
+                txn.executemany(sql, clump)
+
+            progress = {
+                "target_min_stream_id_inclusive": target_min_stream_id,
+                "max_stream_id_exclusive": min_stream_id,
+                "rows_inserted": rows_inserted + len(rows)
+            }
+
+            self._background_update_progress_txn(
+                txn, self.EVENT_ORIGIN_SERVER_TS_NAME, progress
+            )
+
+            return len(rows)
+
+        result = yield self.runInteraction(
+            self.EVENT_ORIGIN_SERVER_TS_NAME, reindex_search_txn
+        )
+
+        if not result:
+            yield self._end_background_update(self.EVENT_ORIGIN_SERVER_TS_NAME)
+
+        defer.returnValue(result)
diff --git a/synapse/storage/prepare_database.py b/synapse/storage/prepare_database.py
index 9800fd4203..16eff62544 100644
--- a/synapse/storage/prepare_database.py
+++ b/synapse/storage/prepare_database.py
@@ -25,7 +25,7 @@ logger = logging.getLogger(__name__)
 
 # Remember to update this number every time a change is made to database
 # schema files, so the users will be informed on server restarts.
-SCHEMA_VERSION = 26
+SCHEMA_VERSION = 27
 
 dir_path = os.path.abspath(os.path.dirname(__file__))
 
diff --git a/synapse/storage/registration.py b/synapse/storage/registration.py
index 2e5eddd259..09a05b08ef 100644
--- a/synapse/storage/registration.py
+++ b/synapse/storage/registration.py
@@ -258,10 +258,10 @@ class RegistrationStore(SQLBaseStore):
     @defer.inlineCallbacks
     def user_add_threepid(self, user_id, medium, address, validated_at, added_at):
         yield self._simple_upsert("user_threepids", {
-            "user_id": user_id,
             "medium": medium,
             "address": address,
         }, {
+            "user_id": user_id,
             "validated_at": validated_at,
             "added_at": added_at,
         })
diff --git a/synapse/storage/roommember.py b/synapse/storage/roommember.py
index ae1ad56d9a..4e0e9ab59a 100644
--- a/synapse/storage/roommember.py
+++ b/synapse/storage/roommember.py
@@ -18,7 +18,7 @@ from twisted.internet import defer
 from collections import namedtuple
 
 from ._base import SQLBaseStore
-from synapse.util.caches.descriptors import cached
+from synapse.util.caches.descriptors import cached, cachedInlineCallbacks
 
 from synapse.api.constants import Membership
 from synapse.types import UserID
@@ -121,7 +121,7 @@ class RoomMemberStore(SQLBaseStore):
         return self.get_rooms_for_user_where_membership_is(
             user_id, [Membership.INVITE]
         ).addCallback(lambda invites: self._get_events([
-            invites.event_id for invite in invites
+            invite.event_id for invite in invites
         ]))
 
     def get_leave_and_ban_events_for_user(self, user_id):
@@ -160,7 +160,7 @@ class RoomMemberStore(SQLBaseStore):
 
     def _get_rooms_for_user_where_membership_is_txn(self, txn, user_id,
                                                     membership_list):
-        where_clause = "user_id = ? AND (%s)" % (
+        where_clause = "user_id = ? AND (%s) AND forgotten = 0" % (
             " OR ".join(["membership = ?" for _ in membership_list]),
         )
 
@@ -269,3 +269,70 @@ class RoomMemberStore(SQLBaseStore):
         ret = len(room_id_lists.pop(0).intersection(*room_id_lists)) > 0
 
         defer.returnValue(ret)
+
+    @defer.inlineCallbacks
+    def forget(self, user_id, room_id):
+        """Indicate that user_id wishes to discard history for room_id."""
+        def f(txn):
+            sql = (
+                "UPDATE"
+                "  room_memberships"
+                " SET"
+                "  forgotten = 1"
+                " WHERE"
+                "  user_id = ?"
+                " AND"
+                "  room_id = ?"
+            )
+            txn.execute(sql, (user_id, room_id))
+        yield self.runInteraction("forget_membership", f)
+        self.was_forgotten_at.invalidate_all()
+        self.did_forget.invalidate((user_id, room_id))
+
+    @cachedInlineCallbacks(num_args=2)
+    def did_forget(self, user_id, room_id):
+        """Returns whether user_id has elected to discard history for room_id.
+
+        Returns False if they have since re-joined."""
+        def f(txn):
+            sql = (
+                "SELECT"
+                "  COUNT(*)"
+                " FROM"
+                "  room_memberships"
+                " WHERE"
+                "  user_id = ?"
+                " AND"
+                "  room_id = ?"
+                " AND"
+                "  forgotten = 0"
+            )
+            txn.execute(sql, (user_id, room_id))
+            rows = txn.fetchall()
+            return rows[0][0]
+        count = yield self.runInteraction("did_forget_membership", f)
+        defer.returnValue(count == 0)
+
+    @cachedInlineCallbacks(num_args=3)
+    def was_forgotten_at(self, user_id, room_id, event_id):
+        """Returns whether user_id has elected to discard history for room_id at event_id.
+
+        event_id must be a membership event."""
+        def f(txn):
+            sql = (
+                "SELECT"
+                "  forgotten"
+                " FROM"
+                "  room_memberships"
+                " WHERE"
+                "  user_id = ?"
+                " AND"
+                "  room_id = ?"
+                " AND"
+                "  event_id = ?"
+            )
+            txn.execute(sql, (user_id, room_id, event_id))
+            rows = txn.fetchall()
+            return rows[0][0]
+        forgot = yield self.runInteraction("did_forget_membership_at", f)
+        defer.returnValue(forgot == 1)
diff --git a/synapse/storage/schema/delta/15/v15.sql b/synapse/storage/schema/delta/15/v15.sql
index f5b2a08ca4..9523d2bcc3 100644
--- a/synapse/storage/schema/delta/15/v15.sql
+++ b/synapse/storage/schema/delta/15/v15.sql
@@ -1,23 +1,22 @@
 -- Drop, copy & recreate pushers table to change unique key
 -- Also add access_token column at the same time
 CREATE TABLE IF NOT EXISTS pushers2 (
-  id INTEGER PRIMARY KEY AUTOINCREMENT,
+  id BIGINT PRIMARY KEY,
   user_name TEXT NOT NULL,
-  access_token INTEGER DEFAULT NULL,
-  profile_tag varchar(32) NOT NULL,
-  kind varchar(8) NOT NULL,
-  app_id varchar(64) NOT NULL,
-  app_display_name varchar(64) NOT NULL,
-  device_display_name varchar(128) NOT NULL,
-  pushkey blob NOT NULL,
+  access_token BIGINT DEFAULT NULL,
+  profile_tag VARCHAR(32) NOT NULL,
+  kind VARCHAR(8) NOT NULL,
+  app_id VARCHAR(64) NOT NULL,
+  app_display_name VARCHAR(64) NOT NULL,
+  device_display_name VARCHAR(128) NOT NULL,
+  pushkey bytea NOT NULL,
   ts BIGINT NOT NULL,
-  lang varchar(8),
-  data blob,
+  lang VARCHAR(8),
+  data bytea,
   last_token TEXT,
   last_success BIGINT,
   failing_since BIGINT,
-  FOREIGN KEY(user_name) REFERENCES users(name),
-  UNIQUE (app_id, pushkey, user_name)
+  UNIQUE (app_id, pushkey)
 );
 INSERT INTO pushers2 (id, user_name, profile_tag, kind, app_id, app_display_name, device_display_name, pushkey, ts, lang, data, last_token, last_success, failing_since)
   SELECT id, user_name, profile_tag, kind, app_id, app_display_name, device_display_name, pushkey, ts, lang, data, last_token, last_success, failing_since FROM pushers;
diff --git a/synapse/storage/schema/delta/25/fts.py b/synapse/storage/schema/delta/25/fts.py
index 5239d69073..ba48e43792 100644
--- a/synapse/storage/schema/delta/25/fts.py
+++ b/synapse/storage/schema/delta/25/fts.py
@@ -38,7 +38,7 @@ CREATE INDEX event_search_ev_ridx ON event_search(room_id);
 
 
 SQLITE_TABLE = (
-    "CREATE VIRTUAL TABLE IF NOT EXISTS event_search"
+    "CREATE VIRTUAL TABLE event_search"
     " USING fts4 ( event_id, room_id, sender, key, value )"
 )
 
diff --git a/synapse/storage/schema/delta/27/account_data.sql b/synapse/storage/schema/delta/27/account_data.sql
new file mode 100644
index 0000000000..9f25416005
--- /dev/null
+++ b/synapse/storage/schema/delta/27/account_data.sql
@@ -0,0 +1,36 @@
+/* Copyright 2015 OpenMarket Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+CREATE TABLE IF NOT EXISTS account_data(
+    user_id TEXT NOT NULL,
+    account_data_type TEXT NOT NULL, -- The type of the account_data.
+    stream_id BIGINT NOT NULL, -- The version of the account_data.
+    content TEXT NOT NULL,  -- The JSON content of the account_data
+    CONSTRAINT account_data_uniqueness UNIQUE (user_id, account_data_type)
+);
+
+
+CREATE TABLE IF NOT EXISTS room_account_data(
+    user_id TEXT NOT NULL,
+    room_id TEXT NOT NULL,
+    account_data_type TEXT NOT NULL, -- The type of the account_data.
+    stream_id BIGINT NOT NULL, -- The version of the account_data.
+    content TEXT NOT NULL,  -- The JSON content of the account_data
+    CONSTRAINT room_account_data_uniqueness UNIQUE (user_id, room_id, account_data_type)
+);
+
+
+CREATE INDEX account_data_stream_id on account_data(user_id, stream_id);
+CREATE INDEX room_account_data_stream_id on room_account_data(user_id, stream_id);
diff --git a/synapse/storage/schema/delta/27/forgotten_memberships.sql b/synapse/storage/schema/delta/27/forgotten_memberships.sql
new file mode 100644
index 0000000000..beeb8a288b
--- /dev/null
+++ b/synapse/storage/schema/delta/27/forgotten_memberships.sql
@@ -0,0 +1,26 @@
+/* Copyright 2015 OpenMarket Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Keeps track of what rooms users have left and don't want to be able to
+ * access again.
+ *
+ * If all users on this server have left a room, we can delete the room
+ * entirely.
+ *
+ * This column should always contain either 0 or 1.
+ */
+
+ ALTER TABLE room_memberships ADD COLUMN forgotten INTEGER DEFAULT 0;
diff --git a/synapse/storage/schema/delta/27/ts.py b/synapse/storage/schema/delta/27/ts.py
new file mode 100644
index 0000000000..8d4a981975
--- /dev/null
+++ b/synapse/storage/schema/delta/27/ts.py
@@ -0,0 +1,57 @@
+# Copyright 2015 OpenMarket Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import logging
+
+from synapse.storage.prepare_database import get_statements
+
+import ujson
+
+logger = logging.getLogger(__name__)
+
+
+ALTER_TABLE = (
+    "ALTER TABLE events ADD COLUMN origin_server_ts BIGINT;"
+    "CREATE INDEX events_ts ON events(origin_server_ts, stream_ordering);"
+)
+
+
+def run_upgrade(cur, database_engine, *args, **kwargs):
+    for statement in get_statements(ALTER_TABLE.splitlines()):
+        cur.execute(statement)
+
+    cur.execute("SELECT MIN(stream_ordering) FROM events")
+    rows = cur.fetchall()
+    min_stream_id = rows[0][0]
+
+    cur.execute("SELECT MAX(stream_ordering) FROM events")
+    rows = cur.fetchall()
+    max_stream_id = rows[0][0]
+
+    if min_stream_id is not None and max_stream_id is not None:
+        progress = {
+            "target_min_stream_id_inclusive": min_stream_id,
+            "max_stream_id_exclusive": max_stream_id + 1,
+            "rows_inserted": 0,
+        }
+        progress_json = ujson.dumps(progress)
+
+        sql = (
+            "INSERT into background_updates (update_name, progress_json)"
+            " VALUES (?, ?)"
+        )
+
+        sql = database_engine.convert_param_style(sql)
+
+        cur.execute(sql, ("event_origin_server_ts", progress_json))
diff --git a/synapse/storage/search.py b/synapse/storage/search.py
index 380270b009..6cb5e73b6e 100644
--- a/synapse/storage/search.py
+++ b/synapse/storage/search.py
@@ -20,6 +20,7 @@ from synapse.api.errors import SynapseError
 from synapse.storage.engines import PostgresEngine, Sqlite3Engine
 
 import logging
+import re
 
 
 logger = logging.getLogger(__name__)
@@ -84,6 +85,11 @@ class SearchStore(BackgroundUpdateStore):
                     # skip over it.
                     continue
 
+                if not isinstance(value, basestring):
+                    # If the event body, name or topic isn't a string
+                    # then skip over it
+                    continue
+
                 event_search_rows.append((event_id, room_id, key, value))
 
             if isinstance(self.database_engine, PostgresEngine):
@@ -139,6 +145,9 @@ class SearchStore(BackgroundUpdateStore):
             list of dicts
         """
         clauses = []
+
+        search_query = search_query = _parse_query(self.database_engine, search_term)
+
         args = []
 
         # Make sure we don't explode because the person is in too many rooms.
@@ -158,18 +167,36 @@ class SearchStore(BackgroundUpdateStore):
             "(%s)" % (" OR ".join(local_clauses),)
         )
 
+        count_args = args
+        count_clauses = clauses
+
         if isinstance(self.database_engine, PostgresEngine):
             sql = (
-                "SELECT ts_rank_cd(vector, query) AS rank, room_id, event_id"
-                " FROM plainto_tsquery('english', ?) as query, event_search"
-                " WHERE vector @@ query"
+                "SELECT ts_rank_cd(vector, to_tsquery('english', ?)) AS rank,"
+                " room_id, event_id"
+                " FROM event_search"
+                " WHERE vector @@ to_tsquery('english', ?)"
+            )
+            args = [search_query, search_query] + args
+
+            count_sql = (
+                "SELECT room_id, count(*) as count FROM event_search"
+                " WHERE vector @@ to_tsquery('english', ?)"
             )
+            count_args = [search_query] + count_args
         elif isinstance(self.database_engine, Sqlite3Engine):
             sql = (
                 "SELECT rank(matchinfo(event_search)) as rank, room_id, event_id"
                 " FROM event_search"
                 " WHERE value MATCH ?"
             )
+            args = [search_query] + args
+
+            count_sql = (
+                "SELECT room_id, count(*) as count FROM event_search"
+                " WHERE value MATCH ?"
+            )
+            count_args = [search_term] + count_args
         else:
             # This should be unreachable.
             raise Exception("Unrecognized database engine")
@@ -177,12 +204,15 @@ class SearchStore(BackgroundUpdateStore):
         for clause in clauses:
             sql += " AND " + clause
 
+        for clause in count_clauses:
+            count_sql += " AND " + clause
+
         # We add an arbitrary limit here to ensure we don't try to pull the
         # entire table from the database.
         sql += " ORDER BY rank DESC LIMIT 500"
 
         results = yield self._execute(
-            "search_msgs", self.cursor_to_dict, sql, *([search_term] + args)
+            "search_msgs", self.cursor_to_dict, sql, *args
         )
 
         results = filter(lambda row: row["room_id"] in room_ids, results)
@@ -194,21 +224,37 @@ class SearchStore(BackgroundUpdateStore):
             for ev in events
         }
 
-        defer.returnValue([
-            {
-                "event": event_map[r["event_id"]],
-                "rank": r["rank"],
-            }
-            for r in results
-            if r["event_id"] in event_map
-        ])
+        highlights = None
+        if isinstance(self.database_engine, PostgresEngine):
+            highlights = yield self._find_highlights_in_postgres(search_query, events)
+
+        count_sql += " GROUP BY room_id"
+
+        count_results = yield self._execute(
+            "search_rooms_count", self.cursor_to_dict, count_sql, *count_args
+        )
+
+        count = sum(row["count"] for row in count_results if row["room_id"] in room_ids)
+
+        defer.returnValue({
+            "results": [
+                {
+                    "event": event_map[r["event_id"]],
+                    "rank": r["rank"],
+                }
+                for r in results
+                if r["event_id"] in event_map
+            ],
+            "highlights": highlights,
+            "count": count,
+        })
 
     @defer.inlineCallbacks
-    def search_room(self, room_id, search_term, keys, limit, pagination_token=None):
+    def search_rooms(self, room_ids, search_term, keys, limit, pagination_token=None):
         """Performs a full text search over events with given keys.
 
         Args:
-            room_id (str): The room_id to search in
+            room_id (list): The room_ids to search in
             search_term (str): Search term to search for
             keys (list): List of keys to search in, currently supports
                 "content.body", "content.name", "content.topic"
@@ -218,7 +264,18 @@ class SearchStore(BackgroundUpdateStore):
             list of dicts
         """
         clauses = []
-        args = [search_term, room_id]
+
+        search_query = search_query = _parse_query(self.database_engine, search_term)
+
+        args = []
+
+        # Make sure we don't explode because the person is in too many rooms.
+        # We filter the results below regardless.
+        if len(room_ids) < 500:
+            clauses.append(
+                "room_id IN (%s)" % (",".join(["?"] * len(room_ids)),)
+            )
+            args.extend(room_ids)
 
         local_clauses = []
         for key in keys:
@@ -229,28 +286,40 @@ class SearchStore(BackgroundUpdateStore):
             "(%s)" % (" OR ".join(local_clauses),)
         )
 
+        # take copies of the current args and clauses lists, before adding
+        # pagination clauses to main query.
+        count_args = list(args)
+        count_clauses = list(clauses)
+
         if pagination_token:
             try:
-                topo, stream = pagination_token.split(",")
-                topo = int(topo)
+                origin_server_ts, stream = pagination_token.split(",")
+                origin_server_ts = int(origin_server_ts)
                 stream = int(stream)
             except:
                 raise SynapseError(400, "Invalid pagination token")
 
             clauses.append(
-                "(topological_ordering < ?"
-                " OR (topological_ordering = ? AND stream_ordering < ?))"
+                "(origin_server_ts < ?"
+                " OR (origin_server_ts = ? AND stream_ordering < ?))"
             )
-            args.extend([topo, topo, stream])
+            args.extend([origin_server_ts, origin_server_ts, stream])
 
         if isinstance(self.database_engine, PostgresEngine):
             sql = (
-                "SELECT ts_rank_cd(vector, query) as rank,"
-                " topological_ordering, stream_ordering, room_id, event_id"
-                " FROM plainto_tsquery('english', ?) as query, event_search"
+                "SELECT ts_rank_cd(vector, to_tsquery('english', ?)) as rank,"
+                " origin_server_ts, stream_ordering, room_id, event_id"
+                " FROM event_search"
                 " NATURAL JOIN events"
-                " WHERE vector @@ query AND room_id = ?"
+                " WHERE vector @@ to_tsquery('english', ?) AND "
+            )
+            args = [search_query, search_query] + args
+
+            count_sql = (
+                "SELECT room_id, count(*) as count FROM event_search"
+                " WHERE vector @@ to_tsquery('english', ?) AND "
             )
+            count_args = [search_query] + count_args
         elif isinstance(self.database_engine, Sqlite3Engine):
             # We use CROSS JOIN here to ensure we use the right indexes.
             # https://sqlite.org/optoverview.html#crossjoin
@@ -262,24 +331,31 @@ class SearchStore(BackgroundUpdateStore):
             # MATCH unless it uses the full text search index
             sql = (
                 "SELECT rank(matchinfo) as rank, room_id, event_id,"
-                " topological_ordering, stream_ordering"
+                " origin_server_ts, stream_ordering"
                 " FROM (SELECT key, event_id, matchinfo(event_search) as matchinfo"
                 " FROM event_search"
                 " WHERE value MATCH ?"
                 " )"
                 " CROSS JOIN events USING (event_id)"
-                " WHERE room_id = ?"
+                " WHERE "
             )
+            args = [search_query] + args
+
+            count_sql = (
+                "SELECT room_id, count(*) as count FROM event_search"
+                " WHERE value MATCH ? AND "
+            )
+            count_args = [search_term] + count_args
         else:
             # This should be unreachable.
             raise Exception("Unrecognized database engine")
 
-        for clause in clauses:
-            sql += " AND " + clause
+        sql += " AND ".join(clauses)
+        count_sql += " AND ".join(count_clauses)
 
         # We add an arbitrary limit here to ensure we don't try to pull the
         # entire table from the database.
-        sql += " ORDER BY topological_ordering DESC, stream_ordering DESC LIMIT ?"
+        sql += " ORDER BY origin_server_ts DESC, stream_ordering DESC LIMIT ?"
 
         args.append(limit)
 
@@ -287,6 +363,8 @@ class SearchStore(BackgroundUpdateStore):
             "search_rooms", self.cursor_to_dict, sql, *args
         )
 
+        results = filter(lambda row: row["room_id"] in room_ids, results)
+
         events = yield self._get_events([r["event_id"] for r in results])
 
         event_map = {
@@ -294,14 +372,119 @@ class SearchStore(BackgroundUpdateStore):
             for ev in events
         }
 
-        defer.returnValue([
-            {
-                "event": event_map[r["event_id"]],
-                "rank": r["rank"],
-                "pagination_token": "%s,%s" % (
-                    r["topological_ordering"], r["stream_ordering"]
-                ),
-            }
-            for r in results
-            if r["event_id"] in event_map
-        ])
+        highlights = None
+        if isinstance(self.database_engine, PostgresEngine):
+            highlights = yield self._find_highlights_in_postgres(search_query, events)
+
+        count_sql += " GROUP BY room_id"
+
+        count_results = yield self._execute(
+            "search_rooms_count", self.cursor_to_dict, count_sql, *count_args
+        )
+
+        count = sum(row["count"] for row in count_results if row["room_id"] in room_ids)
+
+        defer.returnValue({
+            "results": [
+                {
+                    "event": event_map[r["event_id"]],
+                    "rank": r["rank"],
+                    "pagination_token": "%s,%s" % (
+                        r["origin_server_ts"], r["stream_ordering"]
+                    ),
+                }
+                for r in results
+                if r["event_id"] in event_map
+            ],
+            "highlights": highlights,
+            "count": count,
+        })
+
+    def _find_highlights_in_postgres(self, search_query, events):
+        """Given a list of events and a search term, return a list of words
+        that match from the content of the event.
+
+        This is used to give a list of words that clients can match against to
+        highlight the matching parts.
+
+        Args:
+            search_query (str)
+            events (list): A list of events
+
+        Returns:
+            deferred : A set of strings.
+        """
+        def f(txn):
+            highlight_words = set()
+            for event in events:
+                # As a hack we simply join values of all possible keys. This is
+                # fine since we're only using them to find possible highlights.
+                values = []
+                for key in ("body", "name", "topic"):
+                    v = event.content.get(key, None)
+                    if v:
+                        values.append(v)
+
+                if not values:
+                    continue
+
+                value = " ".join(values)
+
+                # We need to find some values for StartSel and StopSel that
+                # aren't in the value so that we can pick results out.
+                start_sel = "<"
+                stop_sel = ">"
+
+                while start_sel in value:
+                    start_sel += "<"
+                while stop_sel in value:
+                    stop_sel += ">"
+
+                query = "SELECT ts_headline(?, to_tsquery('english', ?), %s)" % (
+                    _to_postgres_options({
+                        "StartSel": start_sel,
+                        "StopSel": stop_sel,
+                        "MaxFragments": "50",
+                    })
+                )
+                txn.execute(query, (value, search_query,))
+                headline, = txn.fetchall()[0]
+
+                # Now we need to pick the possible highlights out of the haedline
+                # result.
+                matcher_regex = "%s(.*?)%s" % (
+                    re.escape(start_sel),
+                    re.escape(stop_sel),
+                )
+
+                res = re.findall(matcher_regex, headline)
+                highlight_words.update([r.lower() for r in res])
+
+            return highlight_words
+
+        return self.runInteraction("_find_highlights", f)
+
+
+def _to_postgres_options(options_dict):
+    return "'%s'" % (
+        ",".join("%s=%s" % (k, v) for k, v in options_dict.items()),
+    )
+
+
+def _parse_query(database_engine, search_term):
+    """Takes a plain unicode string from the user and converts it into a form
+    that can be passed to database.
+    We use this so that we can add prefix matching, which isn't something
+    that is supported by default.
+    """
+
+    # Pull out the individual words, discarding any non-word characters.
+    results = re.findall(r"([\w\-]+)", search_term, re.UNICODE)
+
+    if isinstance(database_engine, PostgresEngine):
+        return " & ".join(result + ":*" for result in results)
+    elif isinstance(database_engine, Sqlite3Engine):
+        return " & ".join(result + "*" for result in results)
+    else:
+        # This should be unreachable.
+        raise Exception("Unrecognized database engine")
diff --git a/synapse/storage/tags.py b/synapse/storage/tags.py
index f6d826cc59..f520f60c6c 100644
--- a/synapse/storage/tags.py
+++ b/synapse/storage/tags.py
@@ -48,8 +48,8 @@ class TagsStore(SQLBaseStore):
         Args:
             user_id(str): The user to get the tags for.
         Returns:
-            A deferred dict mapping from room_id strings to lists of tag
-            strings.
+            A deferred dict mapping from room_id strings to dicts mapping from
+            tag strings to tag content.
         """
 
         deferred = self._simple_select_list(
diff --git a/synapse/util/__init__.py b/synapse/util/__init__.py
index d69c7cb991..2170746025 100644
--- a/synapse/util/__init__.py
+++ b/synapse/util/__init__.py
@@ -64,8 +64,7 @@ class Clock(object):
         current_context = LoggingContext.current_context()
 
         def wrapped_callback(*args, **kwargs):
-            with PreserveLoggingContext():
-                LoggingContext.thread_local.current_context = current_context
+            with PreserveLoggingContext(current_context):
                 callback(*args, **kwargs)
 
         with PreserveLoggingContext():
diff --git a/synapse/util/caches/snapshot_cache.py b/synapse/util/caches/snapshot_cache.py
new file mode 100644
index 0000000000..09f00afbc5
--- /dev/null
+++ b/synapse/util/caches/snapshot_cache.py
@@ -0,0 +1,93 @@
+# -*- coding: utf-8 -*-
+# Copyright 2015 OpenMarket Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from synapse.util.async import ObservableDeferred
+
+
+class SnapshotCache(object):
+    """Cache for snapshots like the response of /initialSync.
+    The response of initialSync only has to be a recent snapshot of the
+    server state. It shouldn't matter to clients if it is a few minutes out
+    of date.
+
+    This caches a deferred response. Until the deferred completes it will be
+    returned from the cache. This means that if the client retries the request
+    while the response is still being computed, that original response will be
+    used rather than trying to compute a new response.
+
+    Once the deferred completes it will removed from the cache after 5 minutes.
+    We delay removing it from the cache because a client retrying its request
+    could race with us finishing computing the response.
+
+    Rather than tracking precisely how long something has been in the cache we
+    keep two generations of completed responses. Every 5 minutes discard the
+    old generation, move the new generation to the old generation, and set the
+    new generation to be empty. This means that a result will be in the cache
+    somewhere between 5 and 10 minutes.
+    """
+
+    DURATION_MS = 5 * 60 * 1000  # Cache results for 5 minutes.
+
+    def __init__(self):
+        self.pending_result_cache = {}  # Request that haven't finished yet.
+        self.prev_result_cache = {}  # The older requests that have finished.
+        self.next_result_cache = {}  # The newer requests that have finished.
+        self.time_last_rotated_ms = 0
+
+    def rotate(self, time_now_ms):
+        # Rotate once if the cache duration has passed since the last rotation.
+        if time_now_ms - self.time_last_rotated_ms >= self.DURATION_MS:
+            self.prev_result_cache = self.next_result_cache
+            self.next_result_cache = {}
+            self.time_last_rotated_ms += self.DURATION_MS
+
+        # Rotate again if the cache duration has passed twice since the last
+        # rotation.
+        if time_now_ms - self.time_last_rotated_ms >= self.DURATION_MS:
+            self.prev_result_cache = self.next_result_cache
+            self.next_result_cache = {}
+            self.time_last_rotated_ms = time_now_ms
+
+    def get(self, time_now_ms, key):
+        self.rotate(time_now_ms)
+        # This cache is intended to deduplicate requests, so we expect it to be
+        # missed most of the time. So we just lookup the key in all of the
+        # dictionaries rather than trying to short circuit the lookup if the
+        # key is found.
+        result = self.prev_result_cache.get(key)
+        result = self.next_result_cache.get(key, result)
+        result = self.pending_result_cache.get(key, result)
+        if result is not None:
+            return result.observe()
+        else:
+            return None
+
+    def set(self, time_now_ms, key, deferred):
+        self.rotate(time_now_ms)
+
+        result = ObservableDeferred(deferred)
+
+        self.pending_result_cache[key] = result
+
+        def shuffle_along(r):
+            # When the deferred completes we shuffle it along to the first
+            # generation of the result cache. So that it will eventually
+            # expire from the rotation of that cache.
+            self.next_result_cache[key] = result
+            self.pending_result_cache.pop(key, None)
+
+        result.observe().addBoth(shuffle_along)
+
+        return result.observe()
diff --git a/synapse/util/debug.py b/synapse/util/debug.py
index f6a5a841a4..b2bee7958f 100644
--- a/synapse/util/debug.py
+++ b/synapse/util/debug.py
@@ -30,8 +30,7 @@ def debug_deferreds():
         context = LoggingContext.current_context()
 
         def restore_context_callback(x):
-            with PreserveLoggingContext():
-                LoggingContext.thread_local.current_context = context
+            with PreserveLoggingContext(context):
                 return fn(x)
 
         return restore_context_callback
diff --git a/synapse/util/logcontext.py b/synapse/util/logcontext.py
index 7e6062c1b8..d528ced55a 100644
--- a/synapse/util/logcontext.py
+++ b/synapse/util/logcontext.py
@@ -19,6 +19,25 @@ import logging
 
 logger = logging.getLogger(__name__)
 
+try:
+    import resource
+
+    # Python doesn't ship with a definition of RUSAGE_THREAD but it's defined
+    # to be 1 on linux so we hard code it.
+    RUSAGE_THREAD = 1
+
+    # If the system doesn't support RUSAGE_THREAD then this should throw an
+    # exception.
+    resource.getrusage(RUSAGE_THREAD)
+
+    def get_thread_resource_usage():
+        return resource.getrusage(RUSAGE_THREAD)
+except:
+    # If the system doesn't support resource.getrusage(RUSAGE_THREAD) then we
+    # won't track resource usage by returning None.
+    def get_thread_resource_usage():
+        return None
+
 
 class LoggingContext(object):
     """Additional context for log formatting. Contexts are scoped within a
@@ -27,7 +46,9 @@ class LoggingContext(object):
         name (str): Name for the context for debugging.
     """
 
-    __slots__ = ["parent_context", "name", "__dict__"]
+    __slots__ = [
+        "parent_context", "name", "usage_start", "usage_end", "main_thread", "__dict__"
+    ]
 
     thread_local = threading.local()
 
@@ -42,11 +63,26 @@ class LoggingContext(object):
         def copy_to(self, record):
             pass
 
+        def start(self):
+            pass
+
+        def stop(self):
+            pass
+
+        def add_database_transaction(self, duration_ms):
+            pass
+
     sentinel = Sentinel()
 
     def __init__(self, name=None):
         self.parent_context = None
         self.name = name
+        self.ru_stime = 0.
+        self.ru_utime = 0.
+        self.db_txn_count = 0
+        self.db_txn_duration = 0.
+        self.usage_start = None
+        self.main_thread = threading.current_thread()
 
     def __str__(self):
         return "%s@%x" % (self.name, id(self))
@@ -56,12 +92,26 @@ class LoggingContext(object):
         """Get the current logging context from thread local storage"""
         return getattr(cls.thread_local, "current_context", cls.sentinel)
 
+    @classmethod
+    def set_current_context(cls, context):
+        """Set the current logging context in thread local storage
+        Args:
+            context(LoggingContext): The context to activate.
+        Returns:
+            The context that was previously active
+        """
+        current = cls.current_context()
+        if current is not context:
+            current.stop()
+            cls.thread_local.current_context = context
+            context.start()
+        return current
+
     def __enter__(self):
         """Enters this logging context into thread local storage"""
         if self.parent_context is not None:
             raise Exception("Attempt to enter logging context multiple times")
-        self.parent_context = self.current_context()
-        self.thread_local.current_context = self
+        self.parent_context = self.set_current_context(self)
         return self
 
     def __exit__(self, type, value, traceback):
@@ -70,16 +120,16 @@ class LoggingContext(object):
         Returns:
             None to avoid suppressing any exeptions that were thrown.
         """
-        if self.thread_local.current_context is not self:
-            if self.thread_local.current_context is self.sentinel:
+        current = self.set_current_context(self.parent_context)
+        if current is not self:
+            if current is self.sentinel:
                 logger.debug("Expected logging context %s has been lost", self)
             else:
                 logger.warn(
                     "Current logging context %s is not expected context %s",
-                    self.thread_local.current_context,
+                    current,
                     self
                 )
-        self.thread_local.current_context = self.parent_context
         self.parent_context = None
 
     def __getattr__(self, name):
@@ -93,6 +143,43 @@ class LoggingContext(object):
         for key, value in self.__dict__.items():
             setattr(record, key, value)
 
+        record.ru_utime, record.ru_stime = self.get_resource_usage()
+
+    def start(self):
+        if threading.current_thread() is not self.main_thread:
+            return
+
+        if self.usage_start and self.usage_end:
+            self.ru_utime += self.usage_end.ru_utime - self.usage_start.ru_utime
+            self.ru_stime += self.usage_end.ru_stime - self.usage_start.ru_stime
+            self.usage_start = None
+            self.usage_end = None
+
+        if not self.usage_start:
+            self.usage_start = get_thread_resource_usage()
+
+    def stop(self):
+        if threading.current_thread() is not self.main_thread:
+            return
+
+        if self.usage_start:
+            self.usage_end = get_thread_resource_usage()
+
+    def get_resource_usage(self):
+        ru_utime = self.ru_utime
+        ru_stime = self.ru_stime
+
+        if self.usage_start and threading.current_thread() is self.main_thread:
+            current = get_thread_resource_usage()
+            ru_utime += current.ru_utime - self.usage_start.ru_utime
+            ru_stime += current.ru_stime - self.usage_start.ru_stime
+
+        return ru_utime, ru_stime
+
+    def add_database_transaction(self, duration_ms):
+        self.db_txn_count += 1
+        self.db_txn_duration += duration_ms / 1000.
+
 
 class LoggingContextFilter(logging.Filter):
     """Logging filter that adds values from the current logging context to each
@@ -121,17 +208,20 @@ class PreserveLoggingContext(object):
     exited. Used to restore the context after a function using
     @defer.inlineCallbacks is resumed by a callback from the reactor."""
 
-    __slots__ = ["current_context"]
+    __slots__ = ["current_context", "new_context"]
+
+    def __init__(self, new_context=LoggingContext.sentinel):
+        self.new_context = new_context
 
     def __enter__(self):
         """Captures the current logging context"""
-        self.current_context = LoggingContext.current_context()
-        LoggingContext.thread_local.current_context = LoggingContext.sentinel
+        self.current_context = LoggingContext.set_current_context(
+            self.new_context
+        )
 
     def __exit__(self, type, value, traceback):
         """Restores the current logging context"""
-        LoggingContext.thread_local.current_context = self.current_context
-
+        LoggingContext.set_current_context(self.current_context)
         if self.current_context is not LoggingContext.sentinel:
             if self.current_context.parent_context is None:
                 logger.warn(
@@ -164,8 +254,7 @@ class _PreservingContextDeferred(defer.Deferred):
 
     def _wrap_callback(self, f):
         def g(res, *args, **kwargs):
-            with PreserveLoggingContext():
-                LoggingContext.thread_local.current_context = self._log_context
+            with PreserveLoggingContext(self._log_context):
                 res = f(res, *args, **kwargs)
             return res
         return g