summary refs log tree commit diff
path: root/synapse
diff options
context:
space:
mode:
authorEric Eastwood <erice@element.io>2022-08-24 18:59:27 -0500
committerGitHub <noreply@github.com>2022-08-24 18:59:27 -0500
commit0bf180cbb43f6e3d489ddaa5d66226b6daeea027 (patch)
tree7f9d396030c1c177bb19c11fbf49cd70368867a8 /synapse
parentRename `event_map` to `unpersisted_events` (#13603) (diff)
downloadsynapse-0bf180cbb43f6e3d489ddaa5d66226b6daeea027.tar.xz
Comment about a better future where we can get the state diff between two events (#13586)
Split off from https://github.com/matrix-org/synapse/pull/13561

Part of https://github.com/matrix-org/synapse/issues/13356

Mentioned in [internal doc](https://docs.google.com/document/d/1lvUoVfYUiy6UaHB6Rb4HicjaJAU40-APue9Q4vzuW3c/edit#bookmark=id.2tvwz3yhcafh)
Diffstat (limited to 'synapse')
-rw-r--r--synapse/handlers/federation_event.py8
1 files changed, 8 insertions, 0 deletions
diff --git a/synapse/handlers/federation_event.py b/synapse/handlers/federation_event.py
index 048c4111f6..ace7adcffb 100644
--- a/synapse/handlers/federation_event.py
+++ b/synapse/handlers/federation_event.py
@@ -1041,6 +1041,14 @@ class FederationEventHandler:
             InvalidResponseError: if the remote homeserver's response contains fields
                 of the wrong type.
         """
+
+        # It would be better if we could query the difference from our known
+        # state to the given `event_id` so the sending server doesn't have to
+        # send as much and we don't have to process as many events. For example
+        # in a room like #matrix:matrix.org, we get 200k events (77k state_events, 122k
+        # auth_events) from this call.
+        #
+        # Tracked by https://github.com/matrix-org/synapse/issues/13618
         (
             state_event_ids,
             auth_event_ids,