Consensus: Raft, Paxos & Leader Election

Raft terms, logs, and elections, Paxos, split brain, fencing tokens, and ZooKeeper and etcd.

0 / 7 solved

Question Tags Difficulty Success

1. Late to the Party

fencing-tokenlease +1

Medium —

2. Even Members Buy Nothing

quorumfault-tolerance +2

Medium —

3. Wrong Tool for Traffic

etcdzookeeper +1

Medium —

4. What Majorities Buy You

majority-quorumconsensus +1

Hard 17%

5. Term Nine Comes Knocking

raftleader-election +2

Hard —

6. Fence In Local Memory

fencing-tokendistributed-locking +2

Hard —

7. Majority Is Not Committed

raftcommit-rules +2

Insane —

Learning Resources

The Raft consensus algorithm

Up next

7 of 7 questions here are still unsolved.

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