Fix performance of responding to user key requests over federation (#10221)

We were repeatedly looking up a config option in a loop (using the
unclassed config style), which is expensive enough that it can cause
large CPU usage.

1 files changed, 2 insertions, 0 deletions

diff --git a/synapse/config/_base.pyi b/synapse/config/_base.pyi

index 844ecd4708..23ca0c83c1 100644
--- a/synapse/config/_base.pyi
+++ b/synapse/config/_base.pyi
@@ -11,6 +11,7 @@ from synapse.config import (
     database,
     emailconfig,
     experimental,
+    federation,
     groups,
     jwt,
     key,
@@ -87,6 +88,7 @@ class RootConfig:
     tracer: tracer.TracerConfig
     redis: redis.RedisConfig
     modules: modules.ModulesConfig
+    federation: federation.FederationConfig
 
     config_classes: List = ...
     def __init__(self) -> None: ...