优化系统资源的Web服务选择方案设计

Web服务中的提供者需要使用各种系统资源来满足客户的要求,请求者要求一定QoS(Quality of Service)的服务。对于提供者来说,怎样选择请求服务,才能在有限的资源下,既保证请求者要求的QoS,又实现系统资源性能最优,而对于请求者来说,怎样才能选择出最满意的提供者,在Web服务的广泛应用中,都是急需解决的问题。文中简要介绍了双向选择的系统模型(Bidirectional Selection-Serv),详细分析了提供者使用多维背包算法,请求者使用需要等待时间原则,来达到双方期望的要求,提高Web服务选择的有效性。

Web Service Selection Scheme Design with optimizing System Resource

Service provider in Web Service needs to use every system resource to satisfy request of client,requestor ask Service with a certain QoS( Quality of Service) . In the aborad application of Web Service,towards to provider ,how to select request, so that under limited resources, not only provide guarantee for the QoS which requestor asks,but also achieve system resources performance optimization, and that towards to requestor,how to select most satisfying provider, these are exact to settle. In this paper, we introduce the Bidirectional SelectionServ briefly, we analyze that provider use the Multidimensional Knapsack Arithmetic in detail, requestor use the Needed Wait Time principle,to achieve the requests which the two parties ask, improve the validity in Web Service Selection.