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Refactor state group lookup to reduce DB hits (#4011)

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Currently when fetching state groups from the data store we make two
hits two the database: once for members and once for non-members (unless
request is filtered to one or the other). This adds needless load to the
datbase, so this PR refactors the lookup to make only a single database
hit.
This commit is contained in:
Erik Johnston 2018-10-25 17:49:55 +01:00 • committed by GitHub
parent e5da60d75d
commit cb53ce9d64
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11 changed files with 717 additions and 488 deletions
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4
synapse/handlers/initial_sync.py
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@ -156,7 +156,7 @@ class InitialSyncHandler(BaseHandler):
room_end_token = "s%d" % (event.stream_ordering,)
deferred_room_state = run_in_background(
self.store.get_state_for_events,
[event.event_id], None,
[event.event_id],
)
deferred_room_state.addCallback(
lambda states: states[event.event_id]
@ -301,7 +301,7 @@ class InitialSyncHandler(BaseHandler):
def _room_initial_sync_parted(self, user_id, room_id, pagin_config,
membership, member_event_id, is_peeking):
room_state = yield self.store.get_state_for_events(
[member_event_id], None
[member_event_id],
)
room_state = room_state[member_event_id]