The Outbox Pattern for Reliable Publishing
Learn the transactional outbox pattern to atomically commit business state and outgoing messages, eliminating the dual-write problem in event-driven systems.
The Dual-Write Problem
Saving to a database and publishing to RabbitMQ are two separate operations. If one succeeds and the other fails, your state and your events drift apart.
This is the dual-write problem.
What Is the Outbox Pattern?
The outbox pattern writes the business change and the outgoing message into the same database transaction, then publishes the message asynchronously from the outbox table.
All lessons in this course
- Idempotency in Message Processing
- Saga Pattern with RabbitMQ
- Command-Query Responsibility Segregation (CQRS)
- The Outbox Pattern for Reliable Publishing