Efficient Web Logs Stair-Case Technique to Improve Hit Ratios of Caching

Cache prefetching technique can improve the hit ratio and expedite users visiting speed. Predictive Web prefetching refers to the mechanism of deducing the forth coming page accesses of a client based on its past accesses.Congestion in Network remains one of the main barriers to the continuing success of the Internet. For Web users, congestion manifests itself in unacceptably long response times. One possible remedy to the latency problem is to use caching at the client, at the proxy server, or within the Internet. However, Web documents are becoming increasingly dynamic, which limits the potential benefit of caching. The performance of a Web caching system can be dramatically increased by integrating document prefetching into its design. Although prefetching reduces the response time of a requested document, it also increases the network load, as some documents will be unnecessarily prefetched.In the paper, we developed a Stair-Case prune algorithm to mine popular with their conditional probabilities from the proxy log, and stored them in the rule table. Then, according to contents and the rule table, a prediction is calculated in some precondition. After the simulation, we found that our approach has much better performance than the other ones, in terms of hit ratio.