Design of Repairable Processes

This chapter illustrates the concept of repairable processes and self-healing functionalities and discusses about their design requirements. Self-healing processes are able to monitor themselves, to diagnose the causes of a failure and to recover from the failure, where a failure can be either the inability to provide a given service, or a loss in the service quality. Defining the process as a composition of services, the aim of this chapter is also to provide guidelines for designing services in such a way that they can be easily recovered during their execution. Repair mechanisms are thoroughly described by distinguishing between mechanisms applicable at design time and at run time.