document: Evaluating a new approach to strong web cache consistency with snapshots of collected content The problem of Web cache consistency continues to be an important one . Current Web caches use heuristic-based policies for determining the freshness of cached objects , often forcing content providers to unnecessarily mark their content as uncacheable simply to retain control over it . Server-driven invalidation has been proposed as a mechanism for providing strong cache consistency for Web objects , but it requires servers to maintain per-client state even for infrequently changing objects . We propose an alternative approach to strong cache consistency , called MONARCH , which does not require servers to maintain per-client state . In this work we focus on a new approach for evaluation of MONARCH in comparison with current practice and other cache consistency policies . This approach uses snapshots of content collected from real Web sites as input to a simulator . Results of the evaluation show MONARCH generates little more request traffic than an optimal cache coherency policy .
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