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Add experimental support for sharding event persister. (#8170)

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This is *not* ready for production yet. Caveats:

1. We should write some tests...
2. The stream token that we use for events can get stalled at the minimum position of all writers. This means that new events may not be processed and e.g. sent down sync streams if a writer isn't writing or is slow.
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Erik Johnston 2020-09-02 15:48:37 +01:00 • committed by GitHub
parent b257c788c0
commit 82c1ee1c22
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18 changed files with 206 additions and 77 deletions
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7
synapse/handlers/room_member.py
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@ -82,13 +82,6 @@ class RoomMemberHandler(object):
self._enable_lookup = hs.config.enable_3pid_lookup
self.allow_per_room_profiles = self.config.allow_per_room_profiles
self._event_stream_writer_instance = hs.config.worker.writers.events
self._is_on_event_persistence_instance = (
self._event_stream_writer_instance == hs.get_instance_name()
)
if self._is_on_event_persistence_instance:
self.persist_event_storage = hs.get_storage().persistence
self._join_rate_limiter_local = Ratelimiter(
clock=self.clock,
rate_hz=hs.config.ratelimiting.rc_joins_local.per_second,