Capacity planning for composite web services using queueing network-based models

In this paper, queueing network-based models are proposed to predict the performance of composite Web services and make them run in an optimal way with limited resources. The models are necessary constituents of reliable Web service composition. They are flexible enough to evaluate the performance indices of the composite Web services simply by solving some equations rather than doing a lot of exhausting experiments. Research shows that our models provide an effective way for both running the services optimally with certain resources and estimating the growth needs accurately.