The answer
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.
Common Node.js Myths and Misconceptions Debunked
Is Node.js a framework?
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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.
Mainly no, since CPU-heavy work blocks the main thread. But worker threads can offload CPU-bound tasks. For pure ML and heavy computation, Python or Go are still better choices.
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