If Raft just makes the implementation easier, why does it matter for the algorithm itself?
Understandability is an engineering property with real consequences. When rules are implicit, bugs hide in the gaps. Raft's explicit rules make it easier to audit, test, and explain—so deployments like etcd and Consul converged quickly. Paxos's correctness proof is valid, but the paper-to-implementation gap was large enough to harbor subtle failures.
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Why Raft Won: Consensus Built for HumansPaxos is correct but hard to understand; Raft made consensus explicit. Same guarantees, different adoption. Why comprehensibility matters in algorithms.
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