Scalable Maintenance for Strong Web Consistency in Dynamic Content Delivery Overlays
Scalable Maintenance for Strong Web Consistency in Dynamic Content Delivery Overlays
复制标题
可扩展维护,以实现动态内容交付覆盖中的强大 Web 一致性
DOI:
10.1109/icc.2007.289
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发表时间:
2007
期刊:
影响因子:
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通讯作者:
Y. Yasuda
中科院分区:
文献类型:
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作者:
Zhou Su;J. Katto;Y. Yasuda
Content Delivery Overlays improves end-user performance by replicating Web contents on a group of geographically distributed sites interconnected over the Internet. However, with the development whereby overlay systems can manage dynamically changing files, an important issue to be resolved is consistency management, which means the cached replicas on different sites must be updated if the originals change. In this paper, based on the analytical formulation of object freshness, Web access distribution and network topology, we derive a novel algorithm as follows: (1) For a given content which has been changed on its original server, only a limited number of its replicas instead of all replicas are updated. (2) After a replica has been selected for update, the latest version will be sent from an algorithm-decided site instead of from its original server. Simulation results verify that the proposed algorithm provides much better consistency management than conventional methods with the reduced the old hit ratio and network traffic.
DOI:
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发表时间:
2003
期刊:
IEICE Transactions on Communications E86-B No.6
影响因子:
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作者:
S.Zhou;J.Katto;T.Nishikawa;M.Murakami;Y.Yasuda
通讯作者:
Y.Yasuda
DOI:
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发表时间:
2003
期刊:
IEICE Transactions on Communications E86-B No.9
影响因子:
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作者:
S.Zhou;T.Washizawa;J.Katto;Y.Yasuda
通讯作者:
Y.Yasuda