Cache Coordination Scheme Based on Two-level Cache
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TP303

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National Natural Science Foundation of China (61572474, 61672500, 61902382, 61972381); National Key Research and Development Program of China (2016YFE0121500, 2018YFB1800403); Strategic Priority Research Program of Chinese Academy of Sciences (XDC02030500)

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    Abstract:

    Information-centric networking (ICN) transforms the network communication mode from the current host-oriented mode to an information-oriented one. Ubiquitous in-network caching is one of the significant features of ICN, which can effectively alleviate server pressure, as well as decrease the user access latency by allowing any nodes in network to cache. However, due to the lack of distribution awareness of content popularity, there are still many problems with the state-of-the-art ICN caching schemes, such as low cache utilization and lack of reasonable planning of cache location. This study proposes a cache coordination scheme based on two-level cache (CSTC) to solve these problems. The content store (CS) of each node is divided into two parts:popularity perception and collaboration allocation. Different caching strategies are applied to cached content with different popularity. At the same time, combined with the popularity filtering and routing mechanism, this scheme reduces cache redundancy and optimizes cache location. Finally, simulation experiments based on real network topology show that CSTC has doubled the number of cached secondary popular content. The cache hit ratio has increased by nearly 50%, and the average round-trip hop count is superior to the existing on-path caching method in most cases.

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刘嘉琦,张亚文,张瀚文,孟绪颖,周继华,张玉军.一种基于两级缓存的协同缓存机制.软件学报,2021,32(9):2963-2976

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History
  • Received:December 25,2018
  • Revised:June 20,2019
  • Adopted:
  • Online: September 15,2021
  • Published: September 06,2021
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