Abstract: With the growing demand for accelerating large scale web access, web proxy cache is widely used. To make full use of computing resource and bandwidth of proxy cache nodes, weak cache consistency is the best choice in most cases. Traditional refreshing methods like Adaptive TTL will cause high invalidate rate of web pages. We introduce a new e ective way to decrease the invalidate rate of frequently queried objects in weak consistency scheme. Based on Zipfs law, our method focuses on giving the hotspot objects more priorities during cache refreshing process, which reduces the invalidate rate on hotspot objects by paying less concentration on the less frequently queried objects.
Keywords: Web Proxy Cache, Invalidate Rate, Weak Consistency
