Uma arquitetura baseada em CORBA para workflow de larga escala

AUTOR(ES)
DATA DE PUBLICAÇÃO

2000

RESUMO

Standard client-server workflow management systems have an intrinsic scalability limitation, the centralized server, which represents a bottleneck for large-scale applications. This server also is a single-failure point that may disable the whole system. In this work, it is proposed a fully distributed architecture for workflow management systems. It is based on the idea that the case (an instance of the process) migrates from host to host, following a process definition, while the case corresponding activities are executed. This basic architecture is improved so that other requirements for Workflow Management Systems, such as fault tolerance, monitoring, interoperability, security and others, are also contemplated. A CORBA-based implementation of such architecture is discussed, with its limitations, advantages and project decisions described. The mobile agent migration, creation and configuration costs were computed. Performance tests, ranging from full centralization to distribution, were defined and performed. In these tests, the distributed configuration performed better than the centralized configuration for instances with more than 5 concurrent cases

ASSUNTO(S)

arquitetura de computador software - arquiteura sistemas operacionais distribuidos (computadores)

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