SYSTEMS AND METHODS FOR CONTROLLING CACHEABILITY AND PRIVACY OF OBJECTS

摘要

Described herein are systems, devices, and methods for content delivery on the Internet. In certain non-limiting embodiments, a caching model is provided that can support caching for indefinite time periods, potentially with infinite or relatively long time-to-live values, yet provide prompt updates when the underlying origin content changes. Origin-generated tokens can drive the process of caching, and can be used as handles for later invalidating origin responses within caching proxy servers delivering the content. Tokens can also be used to control object caching behavior at a server, and in particular to control how an object is indexed in cache and who it may be served to. Tokens may indicate, for example, that responses to certain requested URL paths are public, or may be used to map user-id in a client request to a group for purposes of locating valid cache entries in response to subsequent client requests.

主权项

1. A computer-implemented method operable in a server, comprising:
receiving a first request from a client device, the first request being directed to a URL; in response to the first request, generating a forward request to a remote source; receiving a response to the forward request from the remote source, the response comprising particular content and a token, the token indicating that content received in response to requests made to the URL can be served to one or more other client devices; storing the particular content in a local cache; storing the URL or value derived therefrom in a local data structure; receiving a request from a second client device, the second request being directed to the URL; in response to the request from the second client device, identifying in the local data structure the URL or the value derived therefrom, and based at least in part on that identification, serving the particular content in the local cache to serve to the second client device.