diff options
Diffstat (limited to 'synapse/util/caches/expiringcache.py')
| -rw-r--r-- | synapse/util/caches/expiringcache.py | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/synapse/util/caches/expiringcache.py b/synapse/util/caches/expiringcache.py index 6ad53a6390..465adc54a8 100644 --- a/synapse/util/caches/expiringcache.py +++ b/synapse/util/caches/expiringcache.py @@ -13,11 +13,11 @@ # See the License for the specific language governing permissions and # limitations under the License. -from synapse.util.caches import register_cache - -from collections import OrderedDict import logging +from collections import OrderedDict +from synapse.metrics.background_process_metrics import run_as_background_process +from synapse.util.caches import register_cache logger = logging.getLogger(__name__) @@ -52,19 +52,22 @@ class ExpiringCache(object): self._cache = OrderedDict() - self.metrics = register_cache(cache_name, self) - self.iterable = iterable self._size_estimate = 0 + self.metrics = register_cache("expiring", cache_name, self) + def start(self): if not self._expiry_ms: # Don't bother starting the loop if things never expire return def f(): - self._prune_cache() + run_as_background_process( + "prune_cache_%s" % self._cache_name, + self._prune_cache, + ) self._clock.looping_call(f, self._expiry_ms / 2) @@ -79,7 +82,11 @@ class ExpiringCache(object): while self._max_len and len(self) > self._max_len: _key, value = self._cache.popitem(last=False) if self.iterable: - self._size_estimate -= len(value.value) + removed_len = len(value.value) + self.metrics.inc_evictions(removed_len) + self._size_estimate -= removed_len + else: + self.metrics.inc_evictions() def __getitem__(self, key): try: |