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Abstract

This paper presents the foundations of Rapids ("Replicated Ada Partitions In Distributed Systems"), an implementation of the Distributed Systems Annex E incorporating the transparent replication of partitions in distributed Ada 95 applications. Rapids is a replication manager for semi-active replication based on a piecewise deterministic computation model It guarantees replica consistency for arbitrary Ada 95 partitions despite the inherent non-determinism of multitasking, offering k-resilient partitions. The Rapids prototype is implemented for the GNAT compiler and evolved from its PCS, Garlic.

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