CDN中基于服务效用的请求重定向策略

摘要

改进了一种评测内容分发网络服务效用的量化标准，以体现内容分发系统的感知得益，表达各副本服务器的服务效能，并在效用评测的基础上提出了一种请求重定向策略。通过仿真模拟测试，表明该请求重定向策略可以提高内容分发网络的服务性能。%To quantify the service utility of Content Delivery Network(CDN), this paper develops metrics to measure its content-serving utility. This quantitative measure can provide an indication of the perceived benefits of CDN system and express the service effectiveness of each replica server. It uses this measured utility to devise a request-redirection policy. The extensive simulations demonstrate that this approach can improve content delivery performance in CDN.