Abstract:State machine replication protocols such as Raft are widely used to build highly-available strongly-consistent services, maintaining liveness even if a minority of servers crash. As these systems are implemented and optimised for production, they accumulate many divergences from the original specification. These divergences are poorly documented, resulting in operators having an incomplete model of the system's characteristics, especially during failures. In this paper, we look at one such Raft model used to e… Show more
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