About Proxy Arrays

Proxy arrays for distributed caching allow multiple proxies to serve as a single cache. In other words, each proxy in the array will contain different cached URLs that can be retrieved by a browser or downstream proxy server. Proxy arrays prevent the duplication of caches that often occurs with multiple proxy servers. Through hash-based routing, proxy arrays route requests to the correct cache in the proxy array.

Proxy arrays also allow incremental scalability. In other words, if you decide to add another proxy to your proxy array, each member’s cache is not invalidated. Only 1/n of the URLs in each member’s cache, where n is the number of proxies in your array, will be reassigned to other members.