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The Weak Mutual Exclusion (WME) is a recently proposed abstraction which, analogously to classical Distributed Mutual Exclusion (DME), permits to serialize concurrent accesses to a shared resource. Unlike DME, however, the WME abstraction regulates the access to a replicated shared resource and is solvable in the presence of less restrictive synchrony assumptions, i.e. in an asynchronous system augmented...
This paper proposes a novel database replication algorithm that offers strong consistency (linearizable semantics) and allows reads and non-conflicting writes to execute in parallel in multiple replicas. The proposed algorithm supports the use of quorums to trade the availability/efficiency of read and write operations, making a bridge between consensus-based and quorum based solutions for database...
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