二维多层次的云服务可靠性评估方法研究  

Research on two-dimensional and multi-levels reliability evaluation method of cloud service

作　　者：刘颖[1] 潘宁[1] 焦阳[1] 

机构地区：[1]解放军信息工程大学,郑州450004

出　　处：《计算机应用研究》2014年第3期832-838,共7页Application Research of Computers

基　　金：国家"863"计划基金资助项目(2008AA01Z404);国防预研基金资助项目(9140A26010306JB5201)

摘　　要：针对云服务业务流程管理的特点,给出了云服务的组合实现框架;依据随机Petri网的建模理论,探讨了组合云服务流程网模型的细粒度建模方法;根据动态多变的用户需求,设计了二维多层次的云服务组合可靠性动态评估框架,并给出了马尔可夫过程和等值约简的两种可靠性计算方法。应用示例分析结果表明,该方法具有较好的动态适应性和灵活性,能有效满足云服务的可靠性评估需求。In allusion to the characteristics of the business process management, this paper provided an implementation frame- work of composite cloud service. Based on the theory and modeling methods of stochastic Pctri nets, it discussed the methods for the transformation from the BPEL business process to the composite cloud service process net model. In view of the idea of SOA and the dynamic changeable requirements, it designed a two-dimensional and multi-levels reliability evaluation framework of cloud service composite, and introduced the reliability analysis method based on Markov process and the reliability dynamic assessment method based on equivalent reduction. The application example analysis results show that the method is more dy- namic adaptability and flexibility, which can effectively meet the reliability evalution of the cloud service demand.

关 键 词：二维多层次 云服务 可靠性 动态评估 

分 类 号：TN393[电子电信—物理电子学]