基于局部流行度的分布式协作缓存策略

doi:10.19678/j.issn.1000-3428.0046140

计算机工程 ›› 2018, Vol. 44 ›› Issue (5): 94-100,106. doi: 10.19678/j.issn.1000-3428.0046140

基于局部流行度的分布式协作缓存策略

房晓阳^1,2,季新生¹,刘彩霞¹,杜福德²

1.国家数字交换系统工程技术研究中心,郑州 450002; 2.65054部队,大连 116000

收稿日期:2017-02-28 出版日期:2018-05-15 发布日期:2018-05-15
作者简介:房晓阳(1989—),男,硕士研究生,主研方向为新型网络体系结构设计、内容中心网络;季新生、刘彩霞,教授;杜福德,工程师。
基金资助:
国家高技术研究发展计划项目(2014AA01A701);国家自然科学基金(61521003);国家科技支撑计划项目(2014BAH30B01)。

Local Popularity Based Distributed Collaboration Cache Strategy

FANG Xiaoyang^1,2,JI Xinsheng ¹,LIU Caixia ¹,DU Fude²

1.National Digital Switching System Engineering and Technological R&D Center,Zhengzhou 450002,China; 2.Unit 65054,Dalian 116000,China

Received:2017-02-28 Online:2018-05-15 Published:2018-05-15

摘要/Abstract

摘要： 内置缓存是命名数据网络的关键特征之一,为实现节点缓存的高效利用,基于局部流行度,提出一种新的分布式协作缓存策略。通过对用户接入节点进行周期性地统计内容请求速率,并将结果随兴趣包转发,避免请求聚合的影响,在请求路径上依据缓存收益实现缓存决策,在邻居节点之间执行局部缓存通告,提升缓存利用率。仿真结果表明,该策略能够降低请求时延,提高缓存命中率。

关键词: 命名数据网络, 缓存策略, 流行度, 缓存收益, 局部缓存

Abstract: In-network cache is one of the most important features of Named Data Networking(NDN),aiming to solve the efficient utilize of the cached replicas highly,the local popularity based distributed cooperative cache is proposed.Count the rate of the content request of the user access nodes periodically,and the results are forwarded with the interest package,at the result of avoiding the filter effect.Implement cache decisions based on cache the revenue on the request path;between the neighbor nodes are performing local cache announcements which can improve the cache utilization.Simulation results show that the proposed strategy can reduce the request delay,improve the cache hit rate.

Key words: Named Data Network(NDN), cache strategy, popularity, cache revenue, local cache

中图分类号:

TP393

房晓阳,季新生,刘彩霞,杜福德. 基于局部流行度的分布式协作缓存策略[J]. 计算机工程, 2018, 44(5): 94-100,106.

FANG Xiaoyang,JI Xinsheng,LIU Caixia,DU Fude. Local Popularity Based Distributed Collaboration Cache Strategy[J]. Computer Engineering, 2018, 44(5): 94-100,106.

http://www.ecice06.com/CN/Y2018/V44/I5/94

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