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Article: Document replication and distribution in extensible geographically distributed web servers

TitleDocument replication and distribution in extensible geographically distributed web servers
Authors
KeywordsDistributed Web Servers
Document Replication And Distribution
Issue Date2003
PublisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/jpdc
Citation
Journal Of Parallel And Distributed Computing, 2003, v. 63 n. 10, p. 927-944 How to Cite?
AbstractA geographically distributed web server (GDWS) system consists of multiple server nodes interconnected by a metropolitan area network (MAN) or a wide area network (WAN). It can achieve better efficiency in handling ever-increasing web requests than centralized web servers because its throughput will not be limited by available bandwidth connecting to a central server. The key research issue in the design of GDWS is how to replicate and distribute the documents of a website among the server nodes. This paper proposes a density-based replication scheme and applies it to our proposed Extensible GDWS architecture. We adopted a partial duplication scheme where document replication targets only at hot objects in a website. To distribute the replicas generated via the density-based replication scheme, we propose four different document distribution algorithms: Greedy-cost, Maximal-density, Greedy-penalty, and Proximity-aware. A proximity-based routing mechanism is designed to incorporate these algorithms for achieving better web server performance in a WAN environment. Simulation results show that the Greedy-penalty algorithm yields most stable load-balancing performance, and the Greedy-cost algorithm causes least internal traffic. Our scheme can achieve 80% of the performance of full-replication, with half the disk space. © 2003 Elsevier Inc. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/152305
ISSN
2015 Impact Factor: 1.32
2015 SCImago Journal Rankings: 0.851
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZhuo, Len_US
dc.contributor.authorWang, CLen_US
dc.contributor.authorLau, FCMen_US
dc.date.accessioned2012-06-26T06:37:04Z-
dc.date.available2012-06-26T06:37:04Z-
dc.date.issued2003en_US
dc.identifier.citationJournal Of Parallel And Distributed Computing, 2003, v. 63 n. 10, p. 927-944en_US
dc.identifier.issn0743-7315en_US
dc.identifier.urihttp://hdl.handle.net/10722/152305-
dc.description.abstractA geographically distributed web server (GDWS) system consists of multiple server nodes interconnected by a metropolitan area network (MAN) or a wide area network (WAN). It can achieve better efficiency in handling ever-increasing web requests than centralized web servers because its throughput will not be limited by available bandwidth connecting to a central server. The key research issue in the design of GDWS is how to replicate and distribute the documents of a website among the server nodes. This paper proposes a density-based replication scheme and applies it to our proposed Extensible GDWS architecture. We adopted a partial duplication scheme where document replication targets only at hot objects in a website. To distribute the replicas generated via the density-based replication scheme, we propose four different document distribution algorithms: Greedy-cost, Maximal-density, Greedy-penalty, and Proximity-aware. A proximity-based routing mechanism is designed to incorporate these algorithms for achieving better web server performance in a WAN environment. Simulation results show that the Greedy-penalty algorithm yields most stable load-balancing performance, and the Greedy-cost algorithm causes least internal traffic. Our scheme can achieve 80% of the performance of full-replication, with half the disk space. © 2003 Elsevier Inc. All rights reserved.en_US
dc.languageengen_US
dc.publisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/jpdcen_US
dc.relation.ispartofJournal of Parallel and Distributed Computingen_US
dc.subjectDistributed Web Serversen_US
dc.subjectDocument Replication And Distributionen_US
dc.titleDocument replication and distribution in extensible geographically distributed web serversen_US
dc.typeArticleen_US
dc.identifier.emailWang, CL:clwang@cs.hku.hken_US
dc.identifier.emailLau, FCM:fcmlau@cs.hku.hken_US
dc.identifier.authorityWang, CL=rp00183en_US
dc.identifier.authorityLau, FCM=rp00221en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/S0743-7315(03)00095-9en_US
dc.identifier.scopuseid_2-s2.0-0242595900en_US
dc.identifier.hkuros92483-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0242595900&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume63en_US
dc.identifier.issue10en_US
dc.identifier.spage927en_US
dc.identifier.epage944en_US
dc.identifier.isiWOS:000186261500003-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridZhuo, L=36945795200en_US
dc.identifier.scopusauthoridWang, CL=7501646188en_US
dc.identifier.scopusauthoridLau, FCM=7102749723en_US

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