Interview questions
Messaging & event-driven designMediumSDE-2

Your system has 15 services connected by Kafka. A customer's refund is 'stuck' and nobody can tell where. How do you make event-driven flows debuggable?

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PhonePeRazorpaySwiggyUber

Think first

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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