spring-boot-saga-pattern

The Saga Pattern manages distributed transactions across microservices by coordinating a sequence of local transactions, ensuring data consistency and eventual consistency without relying on traditional two-phase commits.

You can implement distributed transactions in Spring Boot microservices using the Saga Pattern by applying choreography or orchestration approaches to handle complex workflows, compensating transactions, and state management across service boundaries.

Choreography coordinates the Saga through decentralized event-driven reactions, whereas orchestration relies on a central coordinator to dictate the distributed transaction workflow and trigger compensating transactions for failed operations.

Compensating transactions handle rollback by executing counteracting operations when a step in the distributed transaction fails, such as releasing reserved inventory and cancelling an order gracefully if a payment service fails.

You need the Saga Pattern for microservice architectures requiring eventual consistency across service boundaries, specifically when a complex workflow spans multiple services and traditional two-phase commits are not viable.

Spring Boot supports eventual consistency by implementing the Saga Pattern, allowing microservices to manage distributed workflows through state management, error handling, and compensating transactions instead of distributed locks.