Django 中 Memcached 上的会话 - Memcached 中没有项目

Question

I'm setting up sessions in Django using memcached, and after logging in, no items appear in the cache.

I can connect to my memcached instance with telnet localhost 11211 and stats says the process is running. My cache settings are as follows:

CACHES = {
    'default': {
        'BACKEND': 'django.core.cache.backends.memcached.PyLibMCCache',
        'LOCATION': '127.0.0.1:11211' # can also be a list of locations
    }
}
SESSION_ENGINE = 'django.contrib.sessions.backends.cached_db'

and I do have the database set up for the caching. The sessions show up in the database. (when using just backends.cache nothing shows up in the database or the cache.)

So is this the expected behavior? Do I have to store something special in the session key for it to register?

Answer 1

Use django.core.cache.backends.locmem.LocMemCache as below

CACHES={
        "default":{
                    "BACKEND":"django.core.cache.backends.memcached.MemcachedCache",
                    "LOCATION": "127.0.0.1:11211"
                    },

        }

Answer 2

I'm using 1.2 and was reading the docs for 1.3.

In 1.2, the cache looks like this: CACHE_BACKEND = "memcached://127.0.0.1:11211/" instead of the caches dictionary.

Answer 3

You also need to add two middleware classes into your MIDDLEWARE_CLASSES setting as described here: https://docs.djangoproject.com/en/dev/topics/cache/?from=olddocs#the-per-site-cache

MIDDLEWARE_CLASSES = ( 'django.middleware.cache.UpdateCacheMiddleware', 'django.middleware.common.CommonMiddleware', 'django.middleware.cache.FetchFromCacheMiddleware', )