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Towards an approach to sustain web services high‐availability using communities of web services

Zakaria Maamar (Institut TELECOM, CNRS UMR Samovar, Evry, France)
Quan Z. Sheng (School of Computer Science, The University of Adelaide, Adelaide, Australia)
Samir Tata (Institut TELECOM, CNRS UMR Samovar, Evry, France)
Djamal Benslimane (LIRIS Laboratory, Claude Bernard Lyon 1 University, Lyon, France)
Mohamed Sellami (Institut TELECOM, CNRS UMR Samovar, Evry, France)

International Journal of Web Information Systems

ISSN: 1744-0084

Article publication date: 3 April 2009

461

Abstract

Purpose

In any critical system, high‐availability of software components like web services has so far been achieved through replication. Three replication strategies known as active, passive, and hybrid, describe for example how many replicas are needed, where to locate replicas, and how replicas interact with the original web service and among themselves if needed. The purpose of this paper is to show how replicates could be substituted with components that are similarly functional to the component that needs back‐up in case of failure.

Design/methodology/approach

After examination of the different existing replication strategies, it was decided to test the suitability of the proposed web services high‐availability approach based on communities for each strategy. To this end, the specification of web services using two behaviors, namely control and operational, was deemed appropriate.

Findings

The active replication strategy is the only strategy that could support the development of a web services high‐availability approach based on communities of web services.

Practical implications

The proposed approach has been validated in practice by deploying a JXTA‐based testbed. The experimental work has implemented the active replication strategy.

Originality/value

Software component high‐availability could be achieved by components that are similarly functional to this component, which permits the common limitations of existing replication strategies to be addressed.

Keywords

Citation

Maamar, Z., Sheng, Q.Z., Tata, S., Benslimane, D. and Sellami, M. (2009), "Towards an approach to sustain web services high‐availability using communities of web services", International Journal of Web Information Systems, Vol. 5 No. 1, pp. 32-55. https://doi.org/10.1108/17440080910947303

Publisher

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Emerald Group Publishing Limited

Copyright © 2009, Emerald Group Publishing Limited

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