Two-Phase Commit — Protocol, Coordinator & Participants

Distributed systems

Raft consensus, replication, consistent hashing, saga-style distributed transactions, two-phase commit, and conflict-free replicated data types.

• Two-Phase Commit — Protocol, Coordinator & Participants

  6 studies
  1. 1.Two-Phase Commit — Protocol, Coordinator & ParticipantsInterview hub: 2PC coordinator, votes, forced logs, blocking vs 3PC, Paxos Commit, and sagas.
  2. 2.Prepare & Commit - Votes, Logging & the DecisionPrepare and commit votes, force-before-send logging, and the decision record.
  3. 3.Failures & Recovery - Blocking, Coordinator Crash & Participant CrashCoordinator and participant crashes, blocking, termination rules, and heuristic decisions.
  4. 4.Optimizations - Presumed Abort, Presumed Commit & Read-Only VotesPresumed abort, presumed commit, and read-only votes without shrinking the uncertainty window.
  5. 5.XA & Database 2PC - Postgres PREPARE, MySQL XA & Heuristic DecisionsX/Open XA, Postgres PREPARE TRANSACTION, MySQL XA, and heuristic commit or rollback.
  6. 6.2PC vs 3PC vs Consensus Commit vs SagasWhy 3PC splits under partition, Paxos Commit as F>0 2PC, and when to use the existing saga series.