Does modern Node.js still use callbacks?
No, not as the norm. Modern Node.js uses async/await and promises. Callbacks still exist for backward compatibility, but new code uses async/await for clean, readable async code.
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More FAQs in Common Node.js Myths and Misconceptions Debunked
Yes. Node.js runs JavaScript on a single thread, but uses a thread pool for blocking work and is designed for high concurrency through non-blocking I/O. It scales very well for I/O-bound work like APIs and real-time apps.
No. Netflix, LinkedIn, PayPal, Walmart, and many large companies use Node.js in production. It is not just for prototypes; it powers real, large-scale systems at major enterprises.
No. Node.js is a runtime, an environment that runs JavaScript. Express is a framework. Mongoose is a library. Node.js is the runtime that runs them all.
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