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== Extensions ==
The dissertation “Consensus: Bridging Theory and Practice” by one of the co-authors of the original paper describes extensions to the original algorithm:<ref>{{Cite web |title=CONSENSUS: BRIDGING THEORY AND PRACTICE|url=https://web.stanford.edu/~ouster/cgi-bin/papers/OngaroPhD.pdf}}</ref>
* Pre-Vote: when a member rejoins the cluster, it can depending on timing trigger an election although there is already a leader. To avoid this, pre-vote will first check in with the other members. Avoiding the unnecessary election improves the availability of cluster, therefore this extension is usually present in production implementations.
* Leadership transfer: a leader that is shutting down orderly can explicitly transfer the leadership to another member. This can be faster than waiting for a timeout. Also, a leader can step down when another member would be a better leader, for example when that member is on a faster machine.
== Production use of Raft ==
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