| 一种有效的混合式P2P Web缓存系统HCache |
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| 引用本文： | 李天亮,石磊.一种有效的混合式P2P Web缓存系统HCache[J].计算机应用,2008,28(6):1478-1480. |
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| 作者姓名： | 李天亮 石磊 |
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| 作者单位： | 郑州大学,信息工程学院,郑州,450052;河南省信息网络重点开放实验室,郑州,450052 |
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| 基金项目： | 国家自然科学基金
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河南省信息网络重点实验室开放基金 |
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| 摘 要： | 针对当前P2P Web 缓存系统中副本过多的问题，提出了一种有效的混合式P2P Web缓存系统：HCache。HCache根据用户对网页的访问特点及网页的优先级，对网页进行有选择的缓存，进而减少P2P Web缓存系统中的副本个数。根据Web对象当前的流行度，对LRU替换策略进行了改进(ELRU)，提高了P2P Web缓存的命中率。在日志驱动的模拟实验表明，HCache缓存系统提高了Web缓存的命中率和性能。
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| 关 键 词： | 缓存 P2P 混合式 LRU |
| 文章编号： | 1001-9081(2008)06-1478-03 |
| 收稿时间： | 2007-12-17 |
| 修稿时间： | 2007年12月17 |
HCache:An efficient hybrid P2P Web caching system |
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| LI Tian-liang,SHI Lei.HCache:An efficient hybrid P2P Web caching system[J].journal of Computer Applications,2008,28(6):1478-1480. |
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| Authors: | LI Tian-liang SHI Lei |
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| Affiliation: | LI Tian-liang1,2,SHI Lei1,21.School of Information Engineering,Zhengzhou University,Zhengzhou Henan 450052,China,2.Henan Provincial Key Laboratory on Information Network |
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| Abstract: | Current P2P Web caching system caches too many duplicates in the system. To solve the problem, an enforced hybrid caching system named HCache was proposed. HCache can reduce the duplicates, by choosing which objects should be cached due to the user's access characteristic and Web priority. The popularity of the Web object was used to improve the LRU replacement (called ELRU), which enhanced the ratio of the P2P Web caching system. In the trace-driven simulation, the result shows that HCache achieves better hit ratio and performance. |
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| Keywords: | cache peer-to-peer hybrid Least Recently Used (LRU) |
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