On-the-Fly Adaptation of Dynamic Service-Based Systems: Incrementality, Reduction and Reuse

On-the-fly adaptation is where adaptation activities are not explicitly represented at design time but are discovered and managed at run time considering all aspect of the execution environments. In this paper we present a comprehensive framework for the on-the-fly adaptation of highly dynamic service-based systems. The framework relies on advanced context-aware adaptation techniques that allow for i) incremental handling of complex adaptation problems by interleaving problem solving and solution execution, ii) reduction in the complexity of each adaptation problem by minimizing the search space according to the specific execution context, and iii) reuse of adaptation solutions by learning from past executions. We evaluate the applicability of the proposed approach on a real world scenario based on the operation of the Bremen sea port.