diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py
index 7b356ba7e5..ff11266c67 100644
--- a/synapse/handlers/sync.py
+++ b/synapse/handlers/sync.py
@@ -252,13 +252,13 @@ class SyncHandler:
self.storage = hs.get_storage()
self.state_store = self.storage.state
- # ExpiringCache((User, Device)) -> LruCache(state_key => event_id)
+ # ExpiringCache((User, Device)) -> LruCache(user_id => event_id)
self.lazy_loaded_members_cache = ExpiringCache(
"lazy_loaded_members_cache",
self.clock,
max_len=0,
expiry_ms=LAZY_LOADED_MEMBERS_CACHE_MAX_AGE,
- )
+ ) # type: ExpiringCache[Tuple[str, Optional[str]], LruCache[str, str]]
async def wait_for_sync_for_user(
self,
@@ -733,8 +733,10 @@ class SyncHandler:
def get_lazy_loaded_members_cache(
self, cache_key: Tuple[str, Optional[str]]
- ) -> LruCache:
- cache = self.lazy_loaded_members_cache.get(cache_key)
+ ) -> LruCache[str, str]:
+ cache = self.lazy_loaded_members_cache.get(
+ cache_key
+ ) # type: Optional[LruCache[str, str]]
if cache is None:
logger.debug("creating LruCache for %r", cache_key)
cache = LruCache(LAZY_LOADED_MEMBERS_CACHE_MAX_SIZE)
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