Non-blocking 2pc

By Lu Pan in 2pc on

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…

Paxos at its heart is very simple

By Lu Pan in distributed system on

The Paxos algorithm, when presented in plain English, is very simple. -- Leslie Lamport 2001 [1] I am going to try explain the single decree Paxos in a way, hopefully, that's easy to understand. To this day, IMO, John Ousterhout's lecture on Paxos is still THE BEST out there. The…