Paper Info
Title
Selective Update Approach To Maintain Strong Web Consistency In Dynamic Content Delivery
Abstract
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.
Year
DOI
Venue
2007
10.1093/ietcom/e90-b.10.2729
IEICE TRANSACTIONS ON COMMUNICATIONS
Keywords
DocType
Volume
content delivery networks, consistency algorithm, web cache performance, network traffic
Journal
E90B
Issue
ISSN
Citations 
10
0916-8516
0
PageRank 
References 
Authors
0.34
12
4
Name
Order
Citations
PageRank
Zhou Su155346.81
Masato Oguro200.68
Jiro Katto326266.14
Yasuhiko Yasuda411317.55