Computer communication modeling for a multisite distributed application design methodology

The authors address the problem of finding the optimal configuration for a distributed application and also determine what database access approach is best suited to each remote database function request. In addition, the formulation developed allows the introduction of constraints that set priorities for the expected response time of each process component of the distributed application. A methodology is described for designing distributed applications accessing remote data in two approaches: remote request shipping and remote transaction shipping. The methodology leads to a final nonlinear programming model, after heuristic steps that continuously reduce the complexity of the problem context. The methodology is applied in a case example for an IBM CICS transaction manager.<>