A cache server includes a media serving engine that is capable of distributing media content. A cache engine is coupled to the media serving engine and capable of caching media content. A set of cache policies is accessible by the cache engine to define the operation of the cache engine. The cache server...http://www.google.com/patents/US7912921?utm_source=gb-gplus-sharePatent US7912921 - Method and apparatus for selecting cache and proxy policy
