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What causes memory leaks in Node.js applications?

Memory leaks happen when unused memory is not released. Common causes include global variables, uncleared timers, unused event listeners, large caches, and forgotten references. Memory profiling tools can help identify and fix these issues.

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How would you handle global error boundaries in Express or Node.js backend apps?

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What is Node.js and why is it used?

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What is the difference between Node.js and JavaScript?

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JB

Jeevan Bhargav

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This answer is calibrated for technical interviews. Verify benchmarks in local sandboxes before deploying.