Fixed #16886 -- Memcached socket file documentation. Thanks ddbeck for the report and patch.

      on your chosen memcached binding)

    * Set :setting:`LOCATION <CACHES-LOCATION>` to ``ip:port`` values,

      where ``ip`` is the IP address of the Memcached daemon and

      ``port`` is the port on which Memcached is running.

      where ``ip`` is the IP address of the Memcached daemon and ``port`` is the

      port on which Memcached is running, or to a ``unix:path`` value, where

      ``path`` is the path to a Memcached Unix socket file.

In this example, Memcached is running on localhost (127.0.0.1) port 11211, using

the ``python-memcached`` binding::

        }

    }

In this example, Memcached is available through a local Unix socket file

:file:`/tmp/memcached.sock` using the ``python-memcached`` binding::

    CACHES = {

        'default': {

            'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',

            'LOCATION': 'unix:/tmp/memcached.sock',

        }

    }

One excellent feature of Memcached is its ability to share cache over multiple

servers. This means you can run Memcached daemons on multiple machines, and the

program will treat the group of machines as a *single* cache, without the need