Abstract
Along with development of information systems, their requirements in terms of fault-tolerance increase and become more stringent. A possible approach to deal with this issue is rollback-recovery that consists in loading by the recovering node its most recent checkpoint, or retransmitting requests saved in its message log, to reach a consistent pre-failure state. Both checkpoint and message log are commonly said to be saved in a persistent storage able to survive any failure. In this paper the authors propose the implementation of a stable storage by means of replication of the log containing recovery information. The proposed solution is especially tailored for the service oriented systems implemented accordingly to REST paradigm. Thus, they utilize RESTful semantics in order to reduce the size of replicated recovery log and thereby increasing the efficiency of the proposed recovery log replication protocol.
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