Debug distributed-system performance problems

Q: Debug distributed-system performance problems

This is a Software Engineering Fundamentals interview question from Amazon for Software Engineer roles. View the full question and solution on PracHub.

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Question

You are asked: “If a distributed system has a performance problem (latency/throughput regression), how would you approach it?”

Describe a practical, step-by-step methodology:

What signals/metrics you check first
How you narrow down where time is spent (client, network, services, storage)
How you validate hypotheses safely in production
How you prevent recurrence

Debug distributed-system performance problems

Solution

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