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Linearize state resolution to help caches

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This commit is contained in:
Erik Johnston 2016-09-01 14:55:03 +01:00
parent 265d847ffd
commit 051a9ea921
1 changed files with 59 additions and 56 deletions
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3
synapse/state.py
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@ -23,6 +23,7 @@ from synapse.api.constants import EventTypes
from synapse.api.errors import AuthError
from synapse.api.auth import AuthEventTypes
from synapse.events.snapshot import EventContext
from synapse.util.async import Linearizer
from collections import namedtuple
@ -84,6 +85,7 @@ class StateHandler(object):
# dict of set of event_ids -> _StateCacheEntry.
self._state_cache = None
self.resolve_linearizer = Linearizer()
def start_caching(self):
logger.debug("start_caching")
@ -283,6 +285,7 @@ class StateHandler(object):
state_group=name,
))
with (yield self.resolve_linearizer.queue(group_names)):
if self._state_cache is not None:
cache = self._state_cache.get(group_names, None)
if cache: