Is collaborative QoS the solution to the SOA dependability dilemma?
Architecting dependable systems VII
Towards pattern-based reliability certification of services
OTM'11 Proceedings of the 2011th Confederated international conference on On the move to meaningful internet systems - Volume Part II
FAS: introducing a service for avoiding faults in composite services
SERENE'12 Proceedings of the 4th international conference on Software Engineering for Resilient Systems
RPC automation: making legacy code relevant
Proceedings of the 8th International Symposium on Software Engineering for Adaptive and Self-Managing Systems
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Increasingly complex information systems operating in dynamic environments ask for management policies able to deal intelligently and autonomously with problems and tasks. An attempt to deal with these aspects can be found in the Service-Oriented Architecture (SOA) paradigm that foresees the creation of business applications from independently developed services, where services and applications build up complex dependencies. Therefore the dependability of SOA systems strongly depends on their ability to self-manage and adapt themselves to cope with changes in the operating conditions and to meet the required dependability with a minimum of resources. In this paper we propose a model-based approach to the realization of self-adaptable SOA systems, aimed at the fulfillment of dependability requirements. Specifically, we provide a methodology driving the system adaptation and we discuss the architectural issues related to its implementation. To bring this approach to fruition, we developed a prototype tool and we show the results that can be achieved with a simple example.