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Erschienen in:
2006 | OriginalPaper | Buchkapitel
On Distributed Service Selection for QoS Driven Service Composition
verfasst von : Fei Li, Fangchun Yang, Sen Su
Erschienen in: E-Commerce and Web Technologies
Verlag: Springer Berlin Heidelberg
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The service oriented paradigm promises dynamic service discovery and on-the-fly service composition to fulfill user requirements. For the dynamic and heterogeneous nature of service and network, ensuring end-to-end QoS (Quality of Service) becomes a challenge in service composition. This paper proposes a distributed QoS registry architecture, in which QoS registries could maintain services cooperatively and exchange information. Then we present a model combining network QoS and service QoS together to show their impact on end-to-end QoS. Based on the distributed QoS registry and combined QoS model, we present a distributed service selection algorithm to find optimal service composition plan. Experimental results show that the algorithm achieves excellent selection result with outstanding performance in our architecture.