DocumentCode :
2387402
Title :
A QoS broker based architecture for efficient Web services selection
Author :
Serhani, M. Adel ; Dssouli, Rachida ; Hafid, Abdelhakim ; Sahraoui, Houari
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., West Montreal, Que., Canada
fYear :
2005
fDate :
11-15 July 2005
Firstpage :
113
Abstract :
Quality of service (QoS) support in Web services plays a great role for the success of this emerging technology. In this paper, we present a QoS broker-based architecture for Web services. The main goal of the architecture is to support the client in selecting Web services based on his/her required QoS. To achieve this goal, we propose a two-phase verification technique that is performed by a third party broker. The first phase consists of syntactic and semantic verification of the service interface description including the QoS parameters description. The second phase consists of applying a measurement technique to compute the QoS metrics stated in the service interface and compares their values with the claimed one. This is used to verify the conformity of a Web service from the QoS point of view (QoS testing). A methodological approach to generate QoS test cases, as input to QoS verification is used. We have implemented a prototype that includes the verification and certification components of the broker. We performed experiments to evaluate the importance of verification and certification features in the selection process using real Web services.
Keywords :
Internet; client-server systems; formal specification; formal verification; program testing; quality of service; software architecture; QoS broker based architecture; QoS parameter description; QoS testing; Web service selection; component certification; component verification; quality of service; semantic verification; service interface description; software architecture; syntactic verification; third party broker; Certification; Computer architecture; Computer interfaces; Decision support systems; Measurement techniques; Quality of service; Service oriented architecture; Simple object access protocol; Testing; Web services;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Web Services, 2005. ICWS 2005. Proceedings. 2005 IEEE International Conference on
Print_ISBN :
0-7695-2409-5
Type :
conf
DOI :
10.1109/ICWS.2005.13
Filename :
1530789
Link To Document :
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