How does Raft prevent split-brain?
Raft enforces that a leader must receive votes from a quorum (majority) of nodes. In any 2-partition split, only ONE partition can contain enough nodes to reach quorum. The majority partition elects a leader and continues; the minority partition cannot and blocks writes, preventing divergence.
Answered in
Why Raft Consensus Prevents Split-BrainRaft ensures only one partition can reach quorum, making split-brain impossible. Writes commit to majorities. Powers etcd and CockroachDB.
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