高技术通讯2013，Vol.23Issue(7)：694-700,7.DOI:10.3772/j.issn.1002-0470.2013.07.005
一种面向Web内容分发的缓存替换策略
A novel cache replacement policy for Web content delivery
摘要
Abstract
The Web content delivery and the cache replacement policy greatly affecting the performance of Web server were studied.Considering that the current cache replacement schemes mainly use the frequency and locality as the basis of replacement and it is found the access interval change rate is more valuable in predicting the new objects arrival through analyzing the real network logs,a novel cache replacement policy based on the access density and the object size was proposed.When using this novel method,the cache can achieve a higher byte hit ratio.The experimental results shows that the method improves 3 ％ ～ 5 ％ of the hit rate than the LRU (least recently used) and LFU (least frequently used),and 5％ ～ 8％ of the byte hit rate than the GDSF (greedy dual size and frequency).关键词
Web缓存/缓存替换/访问间隔/命中率/字节命中率Key words
Web cache/ cache replacement/ access interval/ hit rate/ byte hit ratio引用本文复制引用
李乔,何慧,方滨兴..一种面向Web内容分发的缓存替换策略[J].高技术通讯,2013,23(7):694-700,7.基金项目
863计划(2011AA010705),973计划(2011CB302605)和国家自然科学基金(61173145,60203021)资助项目. （2011AA010705）
