Coordination & Consensus

Make a cluster agree on a leader, a lock, or a transaction outcome even when nodes fail.

4 challenges · ~4 h

1. 1Build a Distributed LockFreefencing tokens and leasesAdvanced~60 minNot started
2. 2Build a Saga Orchestratorcompensating actions in reverseIntermediate~50 minNot started
3. 3Implement Two-Phase Commitprepare votes, all-or-nothing commitAdvanced~55 minNot started
4. 4Implement Raft Leader Electionterms, votes and majority quorumAdvanced~60 minNot started