A Web Service Reliability Model Based on Birth-Death Process
نویسندگان
چکیده
Fault tolerance by redundancy is a key technique for improving web services reliability. But, the reliability and fault tolerance are not well supported by Service-oriented architecture (SOA) conceptual model.Most of the existing analytical models to predict the reliability of web services assume their structures are static which do not conform to reality and the estimated reliability precision is lower. In this paper, first, an extended SOA model is proposed for improving the reliability of web services. Then, a reliability model is presented to evaluate the reliability of web services based on the birth-death process. Last, the reliability of web services is evaluated using simulation approach and a case study is designed, implemented and analyzed to support our model. The results of experiment show the feasibility, validity of our reliability model. Keywords-Web Service Reliability; Birth-Death Process; SOA Conceptual Model
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تاریخ انتشار 2011