关键词: 网内缓存, 缓存策略, 协同缓存, 区域流行度

Abstract:  In-network cache is a basic service of information-centric networking. In order to deploy in-network cache efficiently, this paper completes mainly two works: (1) Study the characteristics of the domestic video content distribution. It shows a highly concentrated characteristic with a stable trend in both content space and geographical space. (2) Propose a technology of deploying in-network cache based on content popularity in order to reduce the cache redundancy, improve cache difference rate and optimize the average access cost with limited cache redundancy. The experimental results show that the proposed technology has a lower average access cost than similar whole network cooperative caching technology. It also slightly improves cache difference rate and cache hit rate.

Key words: in-network cache, caching strategy, caching coordination, regional popularity