Rename table. Add docs.

1 files changed, 1 insertions, 1 deletions

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

index 8af492b69f..7efc5bfeef 100644
--- a/synapse/storage/__init__.py
+++ b/synapse/storage/__init__.py
@@ -126,7 +126,7 @@ class DataStore(RoomMemberStore, RoomStore,
 
         if isinstance(self.database_engine, PostgresEngine):
             self._cache_id_gen = StreamIdGenerator(
-                db_conn, "cache_stream", "stream_id",
+                db_conn, "cache_invalidation_stream", "stream_id",
             )
         else:
             self._cache_id_gen = None