Interview questions
Idempotency, retries & failure handlingMediumSDE-2

Your order service saves the order in Postgres and then publishes an 'OrderPlaced' event to Kafka. Sometimes the warehouse never hears about an order. What is going wrong, and how do you fix it?

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Answer out loud as you would in the room — clarify, give numbers, name the trade-off — then compare with the model answer.

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