Commit c11f9c31 authored by Aymeric Augustin's avatar Aymeric Augustin
Browse files

Optimized the cached_db session backend to check if a key exists in the cache first. 


git-svn-id: http://code.djangoproject.com/svn/django/trunk@17156 bcc190cf-cafb-0310-a4f2-bffc1f526a37
parent bda21e2b

django/contrib/sessions/backends/cached_db.py

+2 −0
Original line number Diff line number Diff line
@@ -28,6 +28,8 @@ class SessionStore(DBStore): 
        return data



    def exists(self, session_key):

        if (KEY_PREFIX + session_key) in cache:

            return True

        return super(SessionStore, self).exists(session_key)



    def save(self, must_create=False):

django/contrib/sessions/tests.py

+5 −0
Original line number Diff line number Diff line
@@ -293,6 +293,11 @@ class CacheDBSessionTests(SessionTestsMixin, TestCase): 


    backend = CacheDBSession



    def test_exists_searches_cache_first(self):

        self.session.save()

        with self.assertNumQueries(0):

            self.assertTrue(self.session.exists(self.session.session_key))





CacheDBSessionWithTimeZoneTests = override_settings(USE_TZ=True)(CacheDBSessionTests)