摘要
针对目前服务计算模型中对应用的可信性支持不足,提出并设计了一种基于虚拟服务的服务可信性保障机制.组合服务中的各个任务环节由虚拟原子服务完成,通过对应用的QoS规划、服务组合以及资源调度方法以满足虚拟原子服务可信需求,进而保障组合服务的可信特性.经过实验验证,该机制可有效保障组合服务的可信QoS要求.
In current web computing systems, the QoS of composed service is usually accomplished via the QoS contract of underlying service. However, it is hard to be guaranteed. In this paper, virtual atom service is introduced to overcome the problem. The virtual service can dynamically select one or a group of underlying atom service to achieve better QoS assurance. The scheduling framework and algorithms of virtual service are introduced and implemented in ICE framework. The experiment shows that the mechanism can improve QoS assurance significantly.
出处
《小型微型计算机系统》
CSCD
北大核心
2011年第3期385-389,共5页
Journal of Chinese Computer Systems
基金
国家"八六三"高技术研究发展计划基金项目(2006AA01Z162)资助
西北工业大学校科技创新基金项目(2008KJ02030)资助
关键词
组合服务
虚拟服务
可信计算
service composition
virtual service
trust computing
