【作者】 苏志勇； 李必信；

【Author】 Zhiyong Su Bixin Li School of Computer Science & Engineering,Southeast University,Nanjing 210096,China

【机构】 东南大学计算机科学与工程学院；

【摘要】 针对基于SOA的Web服务应用系统建立可靠性模型。首先分析了Web系统的运行过程,并提出服务依赖图的概念。基于WS-BPEL构造Web系统及其服务依赖图。Web服务分为3种类型的基本服务和5种体系结构风格的组合服务,分别建立各自的服务依赖图。设计基于服务依赖图的可靠性预测算法。与传统的建模方法相比,该建模方法能有效地降低系统可靠性预测的复杂度,以及多种体系结构的可靠性建模。最后以实例说明系统的可靠性建模和预测过程。更多还原

【Abstract】 Reliability model for web services application system based on SOA..First analysis the running process of Web system,then introduce the concept of service dependency graph(SDG).Based on WS-BPE,we construct Web system and its SDG.We Web services as three types of basic services and five architecture style of composite services,and construct SDG respectively.Finally based on SDG.we design the algorithm for reliability estimating.This reliability modeling effectively reduce the complexity of reliability estimating of Web system,expand the application of other architecture styles,better than traditional methods.Finally we take an example to show the process of reliability modeling and estimating.更多还原