How does Node.js handle concurrency?

Can you explain how Node.js handles concurrency?

Node.js uses an event-driven, non-blocking I/O model to handle concurrency, allowing it to manage multiple connections simultaneously.

What is the event loop in Node.js?

The event loop is a core component of Node.js that allows it to perform non-blocking operations by offloading tasks to the system kernel whenever possible.

How does this compare to traditional multi-threading?

Unlike traditional multi-threading, which creates multiple threads for concurrent execution, Node.js uses a single-threaded model with asynchronous callbacks.

Are there any limitations to this approach?

Yes, while Node.js is efficient for I/O-bound tasks, it can struggle with CPU-bound tasks, as they can block the event loop.