Add cache to `get_server_keys_json_for_remote` (#16123)

1 files changed, 7 insertions, 0 deletions

diff --git a/synapse/storage/keys.py b/synapse/storage/keys.py

index 71584f3f74..e74b2269d2 100644
--- a/synapse/storage/keys.py
+++ b/synapse/storage/keys.py
@@ -25,3 +25,10 @@ logger = logging.getLogger(__name__)
 class FetchKeyResult:
     verify_key: VerifyKey  # the key itself
     valid_until_ts: int  # how long we can use this key for
+
+
+@attr.s(slots=True, frozen=True, auto_attribs=True)
+class FetchKeyResultForRemote:
+    key_json: bytes  # the full key JSON
+    valid_until_ts: int  # how long we can use this key for, in milliseconds.
+    added_ts: int  # When we added this key, in milliseconds.