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QoS-oriented Web Service Framework by Mixed Programming Techniques

机译：QoS导向的Web服务框架通过混合编程技术

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—Web service based applications have been widely applied in various kinds of domains with the development of service-oriented architecture. However, service selection and composition under user’s QoS constraints still remains to be a challenging issue because of the changing of user’s requirements. In this work, we present a QoS-oriented web service framework and its implementation, which is aiming to optimize the performance of service-based application with constraints to user’s QoS requirements. In this framework, the optimum mapping between abstract web services and application’s processes is implemented through mixed programming technique. In addition, an embedded QoS negotiation mechanism is also implemented in this framework for refining the execution of service-based application at runtime. Massive experiments based on real workloads are performed to evaluate the effectiveness of the proposed framework in both static environment and dynamical environment. The results indicate that the proposed framework and its service selection/composition algorithm can significantly improve the user’s QoS satisfaction in terms of five most-mentioned QoS parameters.
机译：-Web服务的应用已广泛应用于各种域，以便在面向服务的架构开发。但是，由于用户的要求改变，用户QoS限制下的服务选择和组成仍然是一个具有挑战性的问题。在这项工作中，我们展示了一个面向QoS的Web服务框架及其实现，其旨在优化基于服务的应用程序的性能，并对用户的QoS要求进行约束。在该框架中，通过混合编程技术实现了抽象Web服务和应用程序之间的最佳映射。此外，还在本框架中实现了嵌入式QoS协商机制，用于在运行时精炼基于服务的应用程序的执行。进行基于实际工作负载的大规模实验，以评估静态环境和动态环境中提出的框架的有效性。结果表明，在五个最升高的QoS参数方面，所提出的框架及其服务选择/组合算法可以显着提高用户的QoS满意度。

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