Eliminating the I/O Bottleneck in Large Web Caches

Abstract

This paper presents a technique for eliminating the disk bottleneck in large Web Caches. Our approach objective is twofold. First, the presented algorithm substantially decreases disk activity during peak server load. Second, it maintains the hit ratio at the level of traditional caching policies. We evaluate the performance of the algorithm using trace driven simulations based on access logs from several top-level Web caches