A software cybernetics approach to deploying and scheduling workflows in service-based systems

Service-based Systems (SBS) are being adopted by many distributed systems. Applications in SBS can often be viewed as the composition of various computing services following specific workflows. These workflows often need to satisfy various timing and resource constraints. In this paper, a software cybernetics approach to deploying and scheduling workflows with timing and resource constraints in SBS is presented In our approach, a logic-based technique for modeling and solving timing and resource constraints for workflows in SBS is developed to generate the initial resource assignments, schedules and deployment plans of agents for workflows. The principles and concepts in software cybernetics are applied to guide the synthesis of software controllers for monitoring and adapting system behavior.