高技术通讯2011，Vol.21Issue(7)：687-694,8.DOI:10.3772/j.issn.1002-0470.2011.07.004
基于访问预测的P2P VoD系统服务端数据缓存策略
A cache management scheme for P2P VoD systems' service ends based on data access forecast
摘要
Abstract
Based on the analysis of the characteristics on the continuity and sequence of the data access pattern on the service ends of a P2P VoD system, this paper proposes a cache management scheme based on access forecast for the service ends, called the CAF. This scheme predicts sequential and random accesses in the future and implements data prefetch-ing accordingly. To determine the cache eviction target, this scheme calculates the future access frequency of cache items base on historical and predicted access on the basis of getting the continuous state of the whole P2P VoD system. The simulation, driven by a VoD system's access records, testifies that this scheme can improve the cache hit ratio and reduce the count of HDD's I/O operation effectively.关键词
对等网络/视频点播(VoD)/访问预测/数据缓存Key words
peer-to-peer network/video-on-demand(VoD)/data access forecast/buffer cache引用本文复制引用
苏杭,尤佳莉,王劲林..基于访问预测的P2P VoD系统服务端数据缓存策略[J].高技术通讯,2011,21(7):687-694,8.基金项目
国家自然科学基金(60903218)资助项目. （60903218）
