A distributed server architecture supporting dynamic resource provisioning for BPM-oriented workflow management systems

Ching Hong Tsai, Kuo Chan Huang*, Feng-Jian Wang, Chun Hao Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Workflow management systems have been widely used in many business process management (BPM) applications. There are also a lot of companies offering commercial software solutions for BPM. However, most of them adopt a simple client/server architecture with one single centralized workflow-management server only. As the number of incoming workflow requests increases, the single workflow-management server might become the performance bottleneck, leading to unacceptable response time. Development of parallel servers might be a possible solution. However, a parallel server architecture with a fixed-number of servers cannot efficiently utilize computing resources under time-varying system workloads. This paper presents a distributed workflow-management server architecture which adopts dynamic resource provisioning mechanisms to deal with the probable performance bottleneck. We implemented a prototype system of the proposed architecture based on a commercial workflow management system, Agentflow. A series of experiments were conducted on the prototype system for performance evaluation. The experimental results indicate that the proposed architecture can deliver scalable performance and effectively maintain stable request response time under a wide range of incoming workflow request workloads.

Original languageEnglish
Pages (from-to)1538-1552
Number of pages15
JournalJournal of Systems and Software
Volume83
Issue number8
DOIs
StatePublished - 1 Aug 2010

Keywords

  • Business process management
  • Dynamic resource provisioning
  • Workflow management system

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