During database failover, every web worker immediately retries indefinitely and clients create duplicate orders. Which behavior should be designed?

Choose the single best answer.

A.Unbounded synchronized retries to guarantee the fastest recovery
B.Bounded retries with exponential backoff/timeouts and idempotent order handling
C.Suppress all failures forever without a timeout or user-service metric
D.Treat each retried order as a new business transaction

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✓ Correct answer

Bounded retries with exponential backoff/timeouts and idempotent order handling

Bounded backoff reduces overload while idempotency prevents repeated business effects. Unlimited synchronized retry can congest recovery; new-transaction retries duplicate orders, and hiding failures indefinitely prevents bounded service behavior. Source guide: PDF page 41.

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