Selective Update Approach to Maintain Strong Web Consistency in Dynamic Content Delivery

• SU Zhou

  the School of Science and Engineering, Waseda University

• OGURO Masato

  Nomura Research Institute, Ltd.

• KATTO Jiro

  the School of Science and Engineering, Waseda University

• YASUDA Yasuhiko

  the School of Science and Engineering, Waseda University

抄録

Content delivery network improves end-user performance by replicating Web contents on a group of geographically distributed sites interconnected over the Internet. However, with the development whereby content distribution 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 better consistency management than conventional methods with the reduced the old hit ratio and network traffic.

収録刊行物

• IEICE transactions on communications

  IEICE transactions on communications 90 (10), 2729-2737, 2007-10-01

  一般社団法人電子情報通信学会

キーワード

• content delivery networks
• consistency algorithm
• web cache performance
• network traffic

詳細情報

• CRID: 1573950402334550016
• NII論文ID: 110007538275
• NII書誌ID: AA10826261
• ISSN: 09168516
• 本文言語コード: en
• データソース種別:
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