A Scalable 3-tier Workflow System Architecture based on Mobile Agents

Y.-H. Suh, N.-S. Park, and I.-C. Jung (Korea)


workflow system, mobile agents, performance, scalability, Stochastic Petri nets


There is an ever-increasing demand for better performance and scalability in workflow systems. We describe how mobile agents can be used to satisfy such a requirement. For the purpose two important design issues are pointed out in workflow execution and architecture levels. Agent delegation models and a 3-tier architecture are suggested in mobile agent based workflow systems as a solution for each consideration. Workload is statically distributed over task performers based on the proposed method. As a result the performance and the scalability are improved. The effectiveness is shown through stochastic Petri-nets simulation through comparison with client-server based-and another mobile agent-based workflow systems.

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