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How do you monitor Node.js application performance?

Performance monitoring involves tracking CPU usage, memory consumption, response times, errors, and database performance. Tools like New Relic, Datadog, Prometheus, and built-in Node.js profiling tools help identify bottlenecks.

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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.