A quorum-consensus replication method for abstract data types
ACM Transactions on Computer Systems (TOCS)
Concurrency versus availability: atomicity mechanisms for replicated data
ACM Transactions on Computer Systems (TOCS)
Specifying graceful degradation in distributed systems
PODC '87 Proceedings of the sixth annual ACM Symposium on Principles of distributed computing
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The ISIS system transforms abstract type specifications into fault-tolerant distributed implementations while insulating users from the mechanisms used to achieve fault-tolerance. This paper discusses techniques for obtaining a fault-tolerant implementation from a non-distributed specification and for achieving improved performance by concurrently updating replicated data. The system itself is based on a small set of communication primitives, which are interesting because they achieve high levels of concurrency while respecting higher level ordering requirements. The performance of distributed fault-tolerant services running on this initial version of ISIS is found to be nearly as good as that of non-distributed, fault-intolerant ones.