Cache Scheme Based on Content Popularity and Node Betweenness in Named Data Networking
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    Abstract:

    Cache is one of the key technologies of named data networking(NDN). However, the basic cache scheme LCE (leave copy everywhere) in NDN leads to much redundancy. The RCOne scheme chooses the cache node randomly without using any information of content and node, which is limited in improving cache performance. The Betw scheme results in that the node has the more frequent replacement with the larger betweenness centrality, which will decrease the cache performance when the node's cache capacity is far smaller than the total content amount. In order to solve those problems, a cache scheme named HotBetw is proposed in this paper based on content popularity and node betweenness to choose appropriate cache node along the content delivery path. The simulation results show that the HotBetw cache scheme can achieve higher cache hit ratio and reduce average request hop compared with existing schemes.

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郭晨,郑烇,丁尧,王嵩.基于内容热度与节点介数的NDN网络缓存策略.计算机系统应用,2017,26(12):165-169

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History
  • Received:March 14,2017
  • Revised:March 31,2017
  • Online: December 07,2017
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