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How do you monitor performance in a Node.js app?

Use monitoring tools like New Relic, Datadog, AppDynamics, or open-source tools

like Prometheus + Grafana.

Track metrics: response time, CPU/memory usage, error rates.
Use Node.js built-in profilers or clinic.js to analyze performance.
Set up alerts for anomalies.

More from Node.js Tutorial

How do you connect Node.js to MongoDB? You typically use the MongoDB Node.js driver or an ODM like Mongoose. Basic connection example with native driver: const { MongoClient } = require('mongodb');
What is Node.js?
What happens when an uncaught exception occurs in Node.js?
What are process.nextTick() and setImmediate()? How do they differ?
How do you write unit tests in Node.js? Unit tests check small, isolated pieces of your code (like functions) to make sure they work
What are common security issues in Node.js applications?
What is clustering in Node.js? Node.js runs on a single thread by default, which means it can handle only one operation at
How do you prevent SQL Injection?

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