Two-phase commit (2PC)

Two-phase commit (2PC) is very popular and used widely in monolithic applications. 2PC operates on an atomic commitment protocol called the 2PC protocol. It provides a way to perform distributed transactions.

The main component of the 2PC protocol is the transaction coordinator, which uses a distributed algorithm to coordinate all the processes that are involved in a distributed transaction, and commits or aborts the transaction based on consensus.

2PC is performed in two phases:

1. Voting phase
2. Completion phase

Voting phase

The voting phase is initiated by the transaction coordinator. It requests all participants to prepare the transaction commit and wait for their voting response (yes for commit and...