这很简单。您使用键和到期时间来写入值。您可以使用键获取值。您可以使系统中的密钥到期。

大多数客户遵循相同的规则。您可以阅读memcached主页上的一般说明和最佳实践。

如果你真的想深入研究它，我会看看它的来源。这是标题评论：

""" client module for memcached (memory cache daemon)

Overview

See U{the MemCached homepagehttp://www.danga.com/memcached} for more about memcached.

Usage summary

This should give you a feel for how this module operates::

import memcache
mc = memcache.Client(['127.0.0.1:11211'], debug=0)

mc.set("some_key", "Some value")
value = mc.get("some_key")

mc.set("another_key", 3)
mc.delete("another_key")

mc.set("key", "1")   # note that the key used for incr/decr must be a string.
mc.incr("key")
mc.decr("key")

The standard way to use memcache with a database is like this::

key = derive_key(obj)
obj = mc.get(key)
if not obj:
    obj = backend_api.get(...)
    mc.set(key, obj)

# we now have obj, and future passes through this code
# will use the object from the cache.

Detailed Documentation

More detailed documentation is available in the L{Client} class. """