Abstract: Methods and apparatus for providing differentiated services with respect to data processing provided by a cache engine. Requests that are received into a cache engine are associated with a particular service level. Processing of the request by the cache engine is then based on the request's particular service level, and may be prioritized based on the request's particular service level, or may be based on the number of hits for such object by clients having the particular service level. When the cache engine does not contain the requested object, the request may be forwarded to a selected origin server, based on the service level of the request. When a response is received from an origin server into the cache engine, processing of such response may also be based on the object request's service level, as well as a priority of the object of the response.