Use efficient .intersection

2018-07-17 11:07:04 +01:00
parent 850238b4ef
commit b2aa05a8d6
1 changed files with 1 additions and 4 deletions
--- a/synapse/util/caches/stream_change_cache.py
+++ b/synapse/util/caches/stream_change_cache.py
@@ -80,10 +80,7 @@ class StreamChangeCache(object):
                )
            }

-            result = {
-                e for e in entities
-                if e in changed_entities
-            }
+            result = changed_entities.intersection(entities)

            self.metrics.inc_hits()
        else: