摘要： 针对Web服务组合中可能存在的巨大补偿代价和不可补偿的Web服务问题，定义Web服务失败代价风险值，提出基于Web服务时间约束和失败代价风险值的Web服务动态提交算法——WSDSA，采用理论证明和仿真实验的方法，证明WSDSA和传统子事务执行后立即提交的方法相比，能有效降低Web服务组合的失败代价，减少不可补偿Web服务需要补偿的次数。
关键词:
失败代价风险值,
事务调度,
Web服务组合事务
Abstract: The cost of compensation may be expensive and it is a subset of non-compensation Web services in transaction of Web services composition. For these two issues, this paper defines the cost of failure risk, provides a scheduling algorithm named WSDSA based on Web services time constraints and the cost of failure risk. It uses the theoretical proof and simulation methods and simulations show that compared with traditional methods, WSDSA reduces the failure cost of Web services compositon and times of non-compensable Web services needing to be compensated.
Key words:
cost of failure risk,
transaction scheduling,
Web services composition transaction
中图分类号:
李壮, 曹宝香, 夏小娜. 基于失败代价风险值的Web服务事务调度算法[J]. 计算机工程, 2010, 36(18): 64-66.
LI Zhuang, CAO Bao-Xiang, JIA Xiao-Na. Web Services Transaction Scheduling Algorithm Based on Cost of Failure Risk[J]. Computer Engineering, 2010, 36(18): 64-66.