Replace DeferredCache with LruCache where possible (#8563)

Most of these uses don't need a full-blown DeferredCache; LruCache is lighter and more appropriate.

1 files changed, 1 insertions, 3 deletions

diff --git a/synapse/storage/databases/main/events.py b/synapse/storage/databases/main/events.py

index ba3b1769b0..87808c1483 100644
--- a/synapse/storage/databases/main/events.py
+++ b/synapse/storage/databases/main/events.py
@@ -1051,9 +1051,7 @@ class PersistEventsStore:
 
         def prefill():
             for cache_entry in to_prefill:
-                self.store._get_event_cache.prefill(
-                    (cache_entry[0].event_id,), cache_entry
-                )
+                self.store._get_event_cache.set((cache_entry[0].event_id,), cache_entry)
 
         txn.call_after(prefill)