Abstract: To improve the whole workflow efficiency of service workflow,the important business related factors was mined by workflow logs,and the service pre-fetching models were proposed by combining with the main efficiency bottleneck of service call.The prefetching services model was computed by these models to improve the buffer hit ratio in Web service instantiated and to shorten the access delay.Simulation results indicated that this approach had the advantage of Web service workflow and provided a more accurate prediction for Web service buffer.

Key words: service workflow, business frequency, pre-fetching model, dependency, workflow logs

摘要： 为了提高服务工作流的整体效率,通过工作流日志挖掘出业务的主要影响因素,再结合服务调用时的主要效率瓶颈,提出服务预取模型。通过该模型可计算出待预取的服务,以此提高服务实例化时缓冲的命中率,缩短用户的访问延迟。实验结果表明,该方法拥有服务工作流的引导优势,能为服务缓冲提供更加精确的预测。

关键词: 服务工作流, 业务频率, 预取模型, 依赖, 工作流日志