Get the cache storage passing mypy

synapse/app/generic_worker.py

@@ -223,7 +223,6 @@ class GenericWorkerSlavedStore(
     # FIXME(#3714): We need to add UserDirectoryStore as we write directly
     # rather than going via the correct worker.
     UserDirectoryStore,
-    StatsStore,
     UIAuthWorkerStore,
     EndToEndRoomKeyStore,
     PresenceStore,

synapse/storage/databases/main/__init__.py

@@ -119,7 +119,6 @@ class DataStore(
     GroupServerStore,
     UserErasureStore,
     MonthlyActiveUsersStore,
-    StatsStore,
     RelationsStore,
     CensorEventsStore,
     UIAuthStore,

synapse/storage/databases/main/cache.py

@@ -34,6 +34,7 @@
     EventPushActionsWorkerStore,
 )
 from synapse.storage.databases.main.relations import RelationsWorkerStore
+from synapse.storage.databases.main.stats import StatsStore
 from synapse.storage.databases.main.stream import StreamWorkerStore
 from synapse.storage.engines import PostgresEngine
 from synapse.storage.util.id_generators import MultiWriterIdGenerator
@@ -59,6 +60,7 @@ class CacheInvalidationWorkerStore(
     RelationsWorkerStore,
     EventPushActionsWorkerStore,
     StreamWorkerStore,
+    StatsStore,
 ):
     # This class must be mixed in with a child class which provides the following
     # attribute. TODO: can we get static analysis to enforce this?

synapse/storage/databases/main/registration.py

@@ -1877,7 +1877,7 @@ async def is_guest(self, user_id: str) -> bool:
         return res if res else False
 
 
-class RegistrationStore(StatsStore, RegistrationBackgroundUpdateStore):
+class RegistrationStore(RegistrationBackgroundUpdateStore, StatsStore):
     def __init__(
         self,
         database: DatabasePool,