Mediating Web Services for Dependability

The paper presents a novel approach to improving dependability of Web Service composition. The proposed architecture, called WS-Mediator, relies on an off-theshelf mediator solution implementing run-time dependability monitoring and assessment, resilience-explicit computing and fault tolerance mechanisms used together to achieve dependable dynamic Web Service integration. We have implemented a Java WS-Mediator framework based upon the WS-Mediator concept, which can be easily integrated into Java Web Services applications. The paper reports results of the exten-sive experiments conducted in the context of the bioinformatics and virtual organization domains, which demonstrate the applicability of our approach. © 2008 University of Newcastle upon Tyne. Printed and published by the University of Newcastle upon Tyne, Computing Science, Claremont Tower, Claremont Road, Newcastle upon Tyne, NE1 7RU, England. Bibliographical details CHEN, Y., ROMANOVSKY, A. Mediating Web Services for Dependability [By] Y. Chen, A. Romanovsky. Newcastle upon Tyne: University of Newcastle upon Tyne: Computing Science, 2008. (University of Newcastle upon Tyne, Computing Science, Technical Report Series, No. CS-TR-1104)