Monolith applications use the 2 phase commit protocol.

● It splits the commit process of the transaction into 2 steps and ensures the ACID principles for all systems.

● Can't use 2-phase commit transactions when building microservices.

● These transactions require locks and don’t scale well.

● Need all systems to be up and running at the same time. Solutions

● Transactional Outbox Pattern

● CDC - Change Data Capture

Best Practice

● Use Red Hat Apache Kafka and CDC using Debezium in eventdriven applications.

● Use New databases like CockroachDB which has built-in

Change Data Capture feature

https://www.cockroachlabs.com/blog/message-queuing-database-kafka/