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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.errors import AuthError
from synapse.api.auth import AuthEventTypes from synapse.api.auth import AuthEventTypes
from synapse.events.snapshot import EventContext from synapse.events.snapshot import EventContext
from synapse.util.async import Linearizer
from collections import namedtuple from collections import namedtuple
@ -84,6 +85,7 @@ class StateHandler(object):
# dict of set of event_ids -> _StateCacheEntry. # dict of set of event_ids -> _StateCacheEntry.
self._state_cache = None self._state_cache = None
self.resolve_linearizer = Linearizer()
def start_caching(self): def start_caching(self):
logger.debug("start_caching") logger.debug("start_caching")
@ -283,6 +285,7 @@ class StateHandler(object):
state_group=name, state_group=name,
)) ))
with (yield self.resolve_linearizer.queue(group_names)):
if self._state_cache is not None: if self._state_cache is not None:
cache = self._state_cache.get(group_names, None) cache = self._state_cache.get(group_names, None)
if cache: if cache: