Dev Tools · 18h ago
Test Saga Compensation Under Duplicate Delivery and Timeouts
A saga test must handle duplicate delivery and timeouts by asserting that refunds are idempotent and final charged amount is never negative. Use stable idempotency keys and persist inbox/outbox records to ensure compensation progress survives restarts. Deterministic simulators should permute faults like duplicate messages and worker crashes, then verify a single terminal state and complete evidence trail.
Meridian48 take
The article rightly emphasizes that compensation in distributed sagas is itself unreliable and must be tested under the same faults as the primary flow, not assumed to be safe.
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Test a Saga When Compensation Times Out and the Message Is Delivered Twice →
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saga-patterndistributed-systems