Aweb object management policy for cooperative hybrid caching architecture

We discuss a predictive, hybrid caching structure that has eliminated the performance issues of the existing structures and proposed a new policy for discarding Web objects that are not likely to be accessed by clients. Our proposed approach is performed based upon the predictive technique using tables of rules derived from actual experience of the Web object requests. We discuss the previously proposed schemes with their disadvantages, and then describe an improved approach employing summary tables in each proxy cache and allowing the limited number of executions of the expensive predictions. We provide a simulation of the proposed policy using the NLANR proxy traces to show the impact this proposed policy has on the performance of the Internet with Web object traffic.