Design considerations for hierarchical Web proxy server using iSCSI

The sharing of caches among Web proxies is an important technique to reduce Web traffic and alleviate network bottlenecks. Additionally, due to emerging network technologies, cooperative Web caching among proxies shows great potential for becoming an effective approach for reducing Web document access latencies. Nevertheless, it is not widely deployed due to the overhead of existing protocols such as ICP. We propose an iSCSI-based hierarchical Web caching scheme which provides greater performance improvement than existing Web caching schemes.