Utility of co-operating Web proxy caches

✍ Scribed by P. Krishnan; Binay Sugla

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 967 KB
• Volume: 30
• Category: Article
• ISSN: 0169-7552
• DOI: 10.1016/s0169-7552(98)00081-6

✦ Synopsis

In this paper. we study the utility of co-operation among intranet proxy caches. We target our study to a corporate intranet environment having multiple Web proxies that each serve a set of hosts. Experiments with our co-operation methods and architectures with real data suggest that daily hit rate improvements due to co-operation can vary from 0.7-28.98. We study the effect of community size on co-operation performance, and analyze the other side-effects of co-operation, e.g., the extra intranet traffic and server load. We develop metrics to deduce information relevant to making decisions about the effectiveness of co-operation, and draw intuitions on when it makes sense for the caches to co-operate. Our work demonstrates a feasible set of metrics that proxies should measure to help in their evaluation of caching effectiveness and their configuration.