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-rw-r--r--synapse/storage/event_federation.py2
-rw-r--r--synapse/storage/roommember.py4
-rw-r--r--synapse/storage/schema/delta/40/current_state_idx.sql17
-rw-r--r--synapse/storage/state.py8
4 files changed, 28 insertions, 3 deletions
diff --git a/synapse/storage/event_federation.py b/synapse/storage/event_federation.py
index f0aa2193fb..ee88c61954 100644
--- a/synapse/storage/event_federation.py
+++ b/synapse/storage/event_federation.py
@@ -129,7 +129,7 @@ class EventFederationStore(SQLBaseStore):
             room_id,
         )
 
-    @cached()
+    @cached(max_entries=5000, iterable=True)
     def get_latest_event_ids_in_room(self, room_id):
         return self._simple_select_onecol(
             table="event_forward_extremities",
diff --git a/synapse/storage/roommember.py b/synapse/storage/roommember.py
index 845def8467..ee800d074f 100644
--- a/synapse/storage/roommember.py
+++ b/synapse/storage/roommember.py
@@ -218,7 +218,7 @@ class RoomMemberStore(SQLBaseStore):
                 " ON e.event_id = c.event_id"
                 " AND m.room_id = c.room_id"
                 " AND m.user_id = c.state_key"
-                " WHERE %s"
+                " WHERE c.type = 'm.room.member' AND %s"
             ) % (where_clause,)
 
             txn.execute(sql, args)
@@ -264,7 +264,7 @@ class RoomMemberStore(SQLBaseStore):
             " ON m.event_id = c.event_id "
             " AND m.room_id = c.room_id "
             " AND m.user_id = c.state_key"
-            " WHERE %(where)s"
+            " WHERE c.type = 'm.room.member' AND %(where)s"
         ) % {
             "where": where_clause,
         }
diff --git a/synapse/storage/schema/delta/40/current_state_idx.sql b/synapse/storage/schema/delta/40/current_state_idx.sql
new file mode 100644
index 0000000000..7ffa189f39
--- /dev/null
+++ b/synapse/storage/schema/delta/40/current_state_idx.sql
@@ -0,0 +1,17 @@
+/* Copyright 2017 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.
+ */
+
+INSERT INTO background_updates (update_name, progress_json) VALUES
+  ('current_state_members_idx', '{}');
diff --git a/synapse/storage/state.py b/synapse/storage/state.py
index d1d653327c..1b3800eb6a 100644
--- a/synapse/storage/state.py
+++ b/synapse/storage/state.py
@@ -49,6 +49,7 @@ class StateStore(SQLBaseStore):
 
     STATE_GROUP_DEDUPLICATION_UPDATE_NAME = "state_group_state_deduplication"
     STATE_GROUP_INDEX_UPDATE_NAME = "state_group_state_type_index"
+    CURRENT_STATE_INDEX_UPDATE_NAME = "current_state_members_idx"
 
     def __init__(self, hs):
         super(StateStore, self).__init__(hs)
@@ -60,6 +61,13 @@ class StateStore(SQLBaseStore):
             self.STATE_GROUP_INDEX_UPDATE_NAME,
             self._background_index_state,
         )
+        self.register_background_index_update(
+            self.CURRENT_STATE_INDEX_UPDATE_NAME,
+            index_name="current_state_events_member_index",
+            table="current_state_events",
+            columns=["state_key"],
+            where_clause="type='m.room.member'",
+        )
 
     @defer.inlineCallbacks
     def get_state_groups_ids(self, room_id, event_ids):