Building high-availability distributed systems requires strong consistency guarantees. Here is how we implemented Raft consensus for an internal distributed log.
1. Raft State Machine & Node Roles
In a distributed cluster, nodes transition between three distinct roles: Follower, Candidate, and Leader. If a follower misses heartbeats during its randomized election timer, it converts to a candidate and requests votes.
Written by Alex Rivera
Building resilient distributed systems and vector database engines. Previously at AWS & Stripe.
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