Back to Docs
Recipe
Raft Consensus
A production-grade implementation of the Raft distributed consensus algorithm with leader election, log replication, and safety guarantees.
1
Leader Election
Randomized election timeouts prevent split votes. Candidates request votes, and the first to reach quorum becomes leader for that term.
2
Log Replication
The leader appends entries to its log and replicates via AppendEntries RPCs. A log entry is committed once a majority of nodes acknowledge it.
3
Safety
The Leader Completeness Property ensures that any leader has all previously committed entries. Election restrictions prevent stale candidates from winning.
Key Properties
- Election Safety: At most one leader per term.
- Log Matching: If two logs contain an entry with the same index and term, they are identical up to that index.
- State Machine Safety: All servers apply the same log entries in the same order.