Method and apparatus for implementing distributed content caching in a content distribution network

摘要

A content distribution server will be described. This content distribution server can be used in a content distribution network (CDN). A distributed content caching technique is also described. This distributed content caching technique can be implemented efficiently and at low cost within the CDN. In various embodiments, content is identified for caching at multiple gateway devices within the CDN by reducing (ideally minimizing) the cost function associated with content delivery in the network. The cost function can take into account the cost of delivering content from the gateway device to the user and the cost associated with delivering content to the user from the central location of the CDN. [Selection] Figure 1