东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2004, Vol. 25 ›› Issue (4): 341-344.DOI: -

• 论著 • 上一篇    下一篇

VOD系统的最优代理缓存方案

胡玉琦;臧怀泉;高远   

  1. 东北大学秦皇岛分校;燕山大学电气工程学院;东北大学秦皇岛分校 河北秦皇岛　066004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2004-04-15 发布日期:2013-06-24
  • 通讯作者: Hu, Y.-Q.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(60273078);;

Optimal proxy-caching scheme for VOD systems

Hu, Yu-Qi (1); Zang, Huai-Quan (2); Gao, Yuan (1)   

  1. (1) Qinhuangdao Branch, Northeastern Univ., Qinhuangdao 066004, China; (2) Coll. of Elec. Eng., Yanshan Univ., Qinhuangdao 066004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2004-04-15 Published:2013-06-24
  • Contact: Hu, Y.-Q.
  • About author:-
  • Supported by:
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摘要： 针对基于代理的分布式VOD系统,提出一种使网络带宽消耗最小的最优代理缓存方案,开发了一种全局试探寻优法,使各种流行度节目得到最优的缓存配置;通过把缓存方案与典型的节目调度策略相结合,定量地分析了缓存配置方案和代理缓存空间大小对系统传输开销的影响,证实了方案的有效性,为服务器设计提供了一种实用的在线节目配置方案·

关键词: VOD, 代理缓存, 网络带宽, 传输开销, 点播强度

Abstract: An efficient proxy-caching scheme is presented to minimize network bandwidth utilization of proxy-based distributed VOD system. Furthermore, a global trial technique is developed to seek optimal proxy-caching allocation for various popular video shows. Combining the proxy-caching scheme with traditional show scheduling schemes the effects of the choice policy of cache allocation and proxy cache size on the total transmission cost are explored quantitatively. The caching scheme is thus proved to be effective and practical for server design to provide on-line video show allocations.

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