Multi Step Processes medium
In a Saga, what happens if the 'Undo' (Compensating Transaction) also fails?
- A The transaction is rolled back automatically by the database.
- B The data is lost forever.
- C The system ignores it.
- D The system retries the Compensating Transaction until it succeeds (Idempotent Retry).
Answer: D. The system retries the Compensating Transaction until it succeeds (Idempotent Retry).
You cannot leave the system in a broken state. Since you can't rollback committed data, you *must* ensure the 'Undo' logic eventually runs. This usually requires indefinite retries or human intervention.
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