How do you handle rollback strategies in microservices?

Question

Accepted Answer

Rollback strategies in microservices ensure data consistency and reliability during failures or errors in transactions.

Use Sagas: Implement a saga pattern to manage distributed transactions, where each service performs its action and can trigger compensating actions if needed.
Event Sourcing: Maintain a log of changes as events, allowing you to revert to a previous state by replaying events.
Two-Phase Commit: Although not commonly recommended due to its complexity, it can be used for strict consistency across services.
Compensating Transactions: For example, if a payment service fails after an order is created, trigger a compensating transaction to cancel the order.
Idempotency: Design services to handle repeated requests safely, ensuring that retries do not lead to inconsistent states.

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