PBFT View Change
When replicas suspect the primary (via timeouts), they broadcast view-change messages carrying proof of their prepared requests; the new primary for view v+1 collects 2f+1 of these and re-proposes every request that any quorum might have committed. This transfers safety across leader replacements at the cost of O(n³) messages in the original protocol.
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When replicas suspect the primary (via timeouts), they broadcast view-change messages carrying proof of their prepared requests; the new primary for view v+1 collects 2f+1 of these and re-proposes every request that any quorum might have committed. This transfers safety across leader replacements at the cost of O(n³) messages in the original protocol.
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