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Volume 32 Issue 10
Dec.  2010
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Wu Xu-Min, Yin Bao-Qun, Huang Jing, Guo Dong. A Prefetching-based Caching Policy in Streaming Service Systems[J]. Journal of Electronics & Information Technology, 2010, 32(10): 2440-2445. doi: 10.3724/SP.J.1146.2009.01333
Citation: Wu Xu-Min, Yin Bao-Qun, Huang Jing, Guo Dong. A Prefetching-based Caching Policy in Streaming Service Systems[J]. Journal of Electronics & Information Technology, 2010, 32(10): 2440-2445. doi: 10.3724/SP.J.1146.2009.01333

A Prefetching-based Caching Policy in Streaming Service Systems

doi: 10.3724/SP.J.1146.2009.01333
  • Received Date: 2009-10-15
  • Rev Recd Date: 2010-04-13
  • Publish Date: 2010-10-19
  • Customers can not get high QoS from the streaming service systems with VCR operation because of the random requests. This paper derives the expectation of the demanding delay with the methods of prefetching and segment-based caching. A near-optimal policy of cache management is given, and the solution can approximate to the optimal one by computing online. The prefetching algorithm is given in the paper. The algorithm can reduce the delay of demands from clients with cooperation of caching and prefetching for improving the efficiency of cache. Simulation results show the effectiveness of proposed algorithm.
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