自注册分布式工作流管理系统的设计与实现*

针对当前工作流管理系统负载平衡能力差，不能满足大批量调度的问题，提出了一个自注册的分布式工作流管理系统。该系统由一个引擎代理来实现动态记录工作流引擎当前负载信息，能够在工作流引擎间合理分配负载量，实现流程实例的优先级调度，支持引擎的预定义最大负载量。通过实际应用和测试结果表明，该系统能较好地实现工作流管理系统的负载平衡。

Design and Realization of Self-registration Distributed Workflow Management System

A self-registration distributed workflow management system is introduced in this paper.It soleves some common problems in current workflow management systems such as poor capability of load balancing,not well satisfying large batch scheduling.In this system,an engine agent is used to record the current load information of workflow engines dynamically and workload is distrbuted reasonably among workflow engines.Scheduling process instances by priorities and prdefining maximal workloads of workflow engines are supported in this system.Practical application and test results prove it can achieve load balancing very well.