QoS-aware replanning of composite Web services
Top Cited Papers
- 1 January 2005
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 121-129 vol.1
- https://doi.org/10.1109/icws.2005.96
Abstract
Run-time service discovery and late-binding constitute some of the most challenging issues of service-oriented software engineering. For late-binding to be effective in the case of composite services, a QoS-aware composition mechanism is needed. This means determining the set of services that, once composed, not only will perform the required functionality, but also will best contribute to achieve the level of QoS promised in service level agreements (SLAs). However, QoS-aware composition relies on estimated QoS values and workflow execution paths previously obtained using a monitoring mechanism. At run-time, the actual QoS values may deviate from the estimations, or the execution path may not be the one foreseen. These changes could increase the risk of breaking SLAs and obtaining a poor QoS. Such a risk could be avoided by replanning the service bindings of the workflow slice still to be executed. This paper proposes an approach to trigger and perform composite service replanning during execution. An evaluation has been performed simulating execution and replanning on a set of composite service workflows.Keywords
This publication has 9 references indexed in Scilit:
- An approach for QoS-aware service composition based on genetic algorithmsPublished by Association for Computing Machinery (ACM) ,2005
- QoS-aware replanning of composite Web servicesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Constraint driven web service composition in METEOR-SPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2004
- Smart monitors for composed servicesPublished by Association for Computing Machinery (ACM) ,2004
- Requirements monitoring for service-based systems: towards a framework based on event calculusPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2004
- QoS-aware middleware for Web services compositionIEEE Transactions on Software Engineering, 2004
- Quality of service for workflows and web service processesJournal of Web Semantics, 2004
- Adapting BPEL4WS for the Semantic Web: The Bottom-Up Approach to Web Service InteroperationPublished by Springer Nature ,2003
- Dynamic and adaptive composition of e-servicesInformation Systems, 2001