Merge pull request #139 from matrix-org/bugs/SYN-369

Fix race with cache invalidation. SYN-369

1 files changed, 3 insertions, 1 deletions

diff --git a/synapse/storage/event_federation.py b/synapse/storage/event_federation.py

index 68f39bd684..893344eff3 100644
--- a/synapse/storage/event_federation.py
+++ b/synapse/storage/event_federation.py
@@ -330,7 +330,9 @@ class EventFederationStore(SQLBaseStore):
             )
             txn.execute(query)
 
-            self.get_latest_event_ids_in_room.invalidate(room_id)
+            txn.call_after(
+                self.get_latest_event_ids_in_room.invalidate, room_id
+            )
 
     def get_backfill_events(self, room_id, event_list, limit):
         """Get a list of Events for a given topic that occurred before (and