From 5ed0e8c61f6b46289fdc5609e8e573b67c2c1982 Mon Sep 17 00:00:00 2001
From: Erik Johnston <erik@matrix.org>
Date: Thu, 1 Jun 2023 14:25:20 +0100
Subject: Cache requests for user's devices from federation (#15675)

This should mitigate the issue where lots of different servers requests
the same user's devices all at once.
---
 synapse/storage/databases/main/devices.py | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'synapse/storage/databases/main/devices.py')

diff --git a/synapse/storage/databases/main/devices.py b/synapse/storage/databases/main/devices.py
index a67fdb3c22..f677d048aa 100644
--- a/synapse/storage/databases/main/devices.py
+++ b/synapse/storage/databases/main/devices.py
@@ -1941,6 +1941,10 @@ class DeviceStore(DeviceWorkerStore, DeviceBackgroundUpdateStore):
             user_id,
             stream_ids[-1],
         )
+        txn.call_after(
+            self._get_e2e_device_keys_for_federation_query_inner.invalidate,
+            (user_id,),
+        )
 
         min_stream_id = stream_ids[0]
 
-- 
cgit 1.5.1