1 files changed, 9 insertions, 1 deletions
diff --git a/synapse/handlers/device.py b/synapse/handlers/device.py
index 7665425232..b184a48cb1 100644
--- a/synapse/handlers/device.py
+++ b/synapse/handlers/device.py
@@ -948,8 +948,16 @@ class DeviceListUpdater:
devices = []
ignore_devices = True
else:
+ prev_stream_id = await self.store.get_device_list_last_stream_id_for_remote(
+ user_id
+ )
cached_devices = await self.store.get_cached_devices_for_user(user_id)
- if cached_devices == {d["device_id"]: d for d in devices}:
+
+ # To ensure that a user with no devices is cached, we skip the resync only
+ # if we have a stream_id from previously writing a cache entry.
+ if prev_stream_id is not None and cached_devices == {
+ d["device_id"]: d for d in devices
+ }:
logging.info(
"Skipping device list resync for %s, as our cache matches already",
user_id,
|
