advancedPerformance & Memory
Your Java service suddenly hits 100% CPU usage even though request volume hasn't changed and there are no errors in the logs. How do you debug it?
Tests whether you know how to use thread dumps and profilers to find a runaway loop or lock contention that logs alone won't show.
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Your Java service suddenly hits 100% CPU usage even though request volume hasn't changed and there are no errors in the logs. How do you debug it?