Volume 1 Number 7 (Oct. 2006)
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JCP 2006 Vol.1(7): 81-88 ISSN: 1796-203X
doi: 10.4304/jcp.1.7.81-88

Reliable Partial Replication of Contents in Web Clusters: Getting Storage without losing Reliability

Jose Daniel Garcia, Jesus Carretero, Felix Garcia, Javier Fernandez, David E. Singh, Alejandro Calderon
1Department of Computer Science, University Carlos III of Madrid, Colmenarejo, Spain

Abstract—Traditionally, distributed Web servers have used two strategies for allocating files on server nodes: full replication and full distribution. While full replication provides a highly reliable solution, it limits storage capacity to the capacity of the smallest node. On the other hand, full distribution provides higher storage capacity at the cost of lower reliability. A hybrid solution is partial replication where every file is allocated to a small number of nodes. The most promising architecture for a partial replication strategy is the Web cluster architecture. However, Web clusters present a big flaw from reliability perspective as they contain a single point of failure. To correct this flaw, in this paper we present a modified architecture: the Web cluster with distributed Web switch. Reliability of Web clusters is evaluated for different replication strategies. System evaluations show that our proposal leads to a highly reliable solution with high scalability.

Index Terms—Web cluster, Web content replication, reliable Web servers, Web content allocation, storage systems

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Cite: Jose Daniel Garcia, Jesus Carretero, Felix Garcia, Javier Fernandez, David E. Singh, Alejandro Calderon, "Reliable Partial Replication of Contents in Web Clusters: Getting Storage without losing Reliability," Journal of Computers vol. 1, no.7, pp. 81-88, 2006.

General Information

ISSN: 1796-203X
Abbreviated Title: J.Comput.
Frequency: Bimonthly
Editor-in-Chief: Prof. Liansheng Tan
Executive Editor: Ms. Nina Lee
Abstracting/ Indexing: DBLP, EBSCO,  ProQuest, INSPEC, ULRICH's Periodicals Directory, WorldCat,etc
E-mail: jcp@iap.org
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