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Safe async event cache (#13308)

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Fix race conditions in the async cache invalidation logic, by separating
the async & local invalidation calls and ensuring any async call i
executed first.

Signed off by Nick @ Beeper (@Fizzadar).
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Nick Mills-Barrett 2022-07-19 13:25:29 +02:00 • committed by GitHub
parent 7864f33e28
commit 2ee0b6ef4b
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8 changed files with 102 additions and 21 deletions
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synapse/storage/databases/main/censor_events.py
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@ -194,7 +194,7 @@ class CensorEventsStore(EventsWorkerStore, CacheInvalidationWorkerStore, SQLBase
# changed its content in the database. We can't call
# self._invalidate_cache_and_stream because self.get_event_cache isn't of the
# right type.
txn.call_after(self._get_event_cache.invalidate, (event.event_id,))
self.invalidate_get_event_cache_after_txn(txn, event.event_id)
# Send that invalidation to replication so that other workers also invalidate
# the event cache.
self._send_invalidation_to_replication(