Lead Backend Developer Interview Questions

9,342 lead backend developer interview questions shared by candidates

"You have four plots showing the CPU and Memory usage of two services: Service 1 and Service 2. Observing the data, you notice a correlation in time when both services experience an increase in resource usage. You also know that Service 1 makes calls to Service 2. 1. What could be the potential bottleneck in this system? 2. What could be the possible reasons for the observed correlation in resource usage? 3. How would you investigate and confirm the root cause?" 4. How can you overcome it?
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Backend Engineer

Interviewed at Upwind

4.2
Feb 6, 2025

"You have four plots showing the CPU and Memory usage of two services: Service 1 and Service 2. Observing the data, you notice a correlation in time when both services experience an increase in resource usage. You also know that Service 1 makes calls to Service 2. 1. What could be the potential bottleneck in this system? 2. What could be the possible reasons for the observed correlation in resource usage? 3. How would you investigate and confirm the root cause?" 4. How can you overcome it?

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