class documentation

A base abstract cache class.

Method get Gets the content from the memcache with a given key.
Method set Sets the given key and content in the cache.
@abc.abstractmethod
def get(self, url):

Gets the content from the memcache with a given key.

Parameters
urlstring, the key for the cache.
Returns
object, the value in the cache for the given key, or None if the key is not in the cache.
@abc.abstractmethod
def set(self, url, content):

Sets the given key and content in the cache.

Parameters
urlstring, the key for the cache.
contentstring, the discovery document.