Considering Service Level Agreement to Improve Performance for Automatic Web Service Composition
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Abstract
Autonomic service level agreement (SLA) research area nowadays is introducing concept for quality of service (QoS) that meets service consumer’s requirements. The service consumer is able to choose multiple QoS levels or negotiate QoS and cost with service providers while execution to establish SLA automatically. Thus, it increase more opportunity for both a service consumer which is performs as a web service composition composer and a service provider to manage their own service efficiently. This paper designs the extended QoS service description by introducing a selected SLA template with multiple levels and the QoS of each level can be varied in specific time. Finally, we simulate results by employing the Genetic Algorithm to compose web services according to user’s SLA constraints to show efficient SLA management which the composer performs as a service provider.
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