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Fixed #11331 -- Stopped closing pylibmc connections after each request. 

libmemcached manages its own connections, so isn't affected by refs #5133.
This commit is contained in:
Ed Morley 2016-09-02 09:33:59 +01:00 committed by Tim Graham
parent 3e935aec6d
commit f02dbbe1ae
2 changed files with 13 additions and 1 deletions
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6
django/core/cache/backends/memcached.py vendored
View File

@ -103,6 +103,7 @@ class BaseMemcachedCache(BaseCache):
return ret return ret
def close(self, **kwargs): def close(self, **kwargs):
# Many clients don't clean up connections properly.
self._cache.disconnect_all() self._cache.disconnect_all()
def incr(self, key, delta=1, version=None): def incr(self, key, delta=1, version=None):
@ -202,3 +203,8 @@ class PyLibMCCache(BaseMemcachedCache):
@cached_property @cached_property
def _cache(self): def _cache(self):
return self._lib.Client(self._servers, **self._options) return self._lib.Client(self._servers, **self._options)
def close(self, **kwargs):
# libmemcached manages its own connections. Don't call disconnect_all()
# as it resets the failover state and creates unnecessary reconnects.
pass

8
tests/cache/tests.py vendored
View File

@ -1156,6 +1156,10 @@ memcached_excluded_caches = {'cull', 'zero_cull'}
class BaseMemcachedTests(BaseCacheTests): class BaseMemcachedTests(BaseCacheTests):
# By default it's assumed that the client doesn't clean up connections
# properly, in which case the backend must do so after each request.
should_disconnect_on_close = True
def test_location_multiple_servers(self): def test_location_multiple_servers(self):
locations = [ locations = [
['server1.tld', 'server2:11211'], ['server1.tld', 'server2:11211'],
@ -1244,7 +1248,7 @@ class BaseMemcachedTests(BaseCacheTests):
# connection is closed when the request is complete. # connection is closed when the request is complete.
with mock.patch.object(cache._lib.Client, 'disconnect_all', autospec=True) as mock_disconnect: with mock.patch.object(cache._lib.Client, 'disconnect_all', autospec=True) as mock_disconnect:
signals.request_finished.send(self.__class__) signals.request_finished.send(self.__class__)
self.assertIs(mock_disconnect.called, True) self.assertIs(mock_disconnect.called, self.should_disconnect_on_close)
@unittest.skipUnless(MemcachedCache_params, "MemcachedCache backend not configured") @unittest.skipUnless(MemcachedCache_params, "MemcachedCache backend not configured")
@ -1276,6 +1280,8 @@ class MemcachedCacheTests(BaseMemcachedTests, TestCase):
)) ))
class PyLibMCCacheTests(BaseMemcachedTests, TestCase): class PyLibMCCacheTests(BaseMemcachedTests, TestCase):
base_params = PyLibMCCache_params base_params = PyLibMCCache_params
# libmemcached manages its own connections.
should_disconnect_on_close = False
# By default, pylibmc/libmemcached don't verify keys client-side and so # By default, pylibmc/libmemcached don't verify keys client-side and so
# this test triggers a server-side bug that causes later tests to fail # this test triggers a server-side bug that causes later tests to fail