This illustration depicts what happens when a cluster member receives a request for cacheable content.

In this case, cluster member cache_Y receives the request, but it does not have the content cached and it is not the owner of the requested content. Cache_Y sends the request to the owner cache, cache_Z. Because the requested content is stored in the owner's cache, the owner returns the requested content to the cluster member (cache_Y) that originally received the request. Cache_Y returns the requested content to the client. The content is stored in cache_Y as on-demand content to satisfy future requests for that document quickly.