Correction: The following description of Paxos Commit is inaccurate. The algorithm is still correct but it's not the same Paxos Commit proposed in the paper. 4/25/2021. Lamport proposed Paxos Commit [https://lamport.azurewebsites.net/video/consensus-on-transaction-commit.pdf] algorithm as an alternative to 2PC for achieving Transaction Commit. It's…
2pc and Paxos are solving the same problem Two Phase Commit, a.k.a 2pc, is a very well-known and intuitive algorithm, often used for coordinating transactions. Paxos is a well-known consensus algorithm, often used for replication on a stateful service. Paxos is less intuitive and harder to grasp. Atomic…
2pc is a Blocking Protocol Two Phase Commit is a blocking protocol. It blocks when Coordinator is not available. Not only the transaction cannot make progress. Other transactions that conflict with the same set of keys are also blocked. Non-blocking 2pc Alternative Daniel Abadi proposed a non-blocking alternative for 2pc…