自适应分布式工作流引擎的研究与设计  

Research and Design of High-adaptive Distributed Workflow Engine

作　　者：宋俊杰[1] 王忠群[1] 于滕[1] 

机构地区：[1]安徽工程科技学院计算机科学与工程系,安徽芜湖241000

出　　处：《计算机与现代化》2008年第3期13-16,共4页Computer and Modernization

摘　　要：目前,分布式工作流系统已经取代集中式系统成为工作流系统主流。针对当前分布式工作流应用中执行环境和需求的变化性,提出了一种基于MVC结构和中介者模式的自适应的分布式工作流系统框架。在该框架中,一方面,执行引擎动态迁入迁出;另一方面,系统对过程和活动两个粒度进行任务调度,从而提高系统对运行环境的适应性以实现分布式工作流系统的柔性和扩展性。Currently, the distributed workflow system has replaced the centralized workflow system as the mainstream in the workflow area. To solve some common problems in a distributed and dynamic environment, a high-adaptive distributed workflow framework is introduced, which is based on MVC structure and mediator model. In the implementation, the framework automatically carries on the duty assignment or the duty adjustment to this engine when an engine was moved into or transferred out. Meanwhile, two granularities, both process and activity instead of process, which the process of scheduling of tasks takes, can bring greater flexibility. Through the mechanism described above, we can improve the system adaptability to the running environment to achieve greater efficiency.

关 键 词：分布式工作流引擎 自适应 任务调度 

分 类 号：TP31[自动化与计算机技术—计算机软件与理论]