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Use OrderedDict in ExpiringCache

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This commit is contained in:
Erik Johnston 2017-01-16 15:33:22 +00:00
parent 897f8752da
commit 6d00213e80
1 changed files with 4 additions and 10 deletions
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14
synapse/util/caches/expiringcache.py
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@ -15,6 +15,7 @@
from synapse.util.caches import register_cache from synapse.util.caches import register_cache
from collections import OrderedDict
import logging import logging
@ -49,7 +50,7 @@ class ExpiringCache(object):
self._reset_expiry_on_get = reset_expiry_on_get self._reset_expiry_on_get = reset_expiry_on_get
self._cache = {} self._cache = OrderedDict()
self.metrics = register_cache(cache_name, self) self.metrics = register_cache(cache_name, self)
@ -70,15 +71,8 @@ class ExpiringCache(object):
self._cache[key] = _CacheEntry(now, value) self._cache[key] = _CacheEntry(now, value)
# Evict if there are now too many items # Evict if there are now too many items
if self._max_len and len(self) > self._max_len: while self._max_len and len(self) > self._max_len:
sorted_entries = sorted( self._cache.popitem(last=False)
self._cache.keys(),
key=lambda item: item[1].time,
)
while len(self) > self._max_len and sorted_entries:
key = sorted_entries.pop()
self._cache.pop(key)
def __getitem__(self, key): def __getitem__(self, key):
try: try: