Java · Mid-level · Theory

In production, a service crashes with an OutOfMemoryError every couple of days. How would you go about finding the cause?

~4 min by voice

How to approach it

They're checking whether the candidate can systematically diagnose memory problems in the JVM: tell the OOM types apart, obtain and analyze a heap dump, distinguish a leak from a lack of memory. And not treat the symptoms by increasing Xmx.

Have you seen this question in a real interview?

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Topics

jvm memory debugging

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Answer by voice

The interviewer will ask this question and listen. Think out loud and ask for a hint if you need one. When you're done, pause or tap “That's my answer”. In about a minute, your score and the points you covered show up here.

Best with headphones · ~4 min