====== Introduction to NodeJs ====== ==== What is Node.js? ==== Node.js is a runtime environment that allows you to execute JavaScript code outside of a browser. Built on the V8 JavaScript engine, it enables developers to build scalable and high-performance applications, particularly for backend development. ==== Key Features ==== **Non-blocking I/O:** Handles multiple requests asynchronously without waiting for previous ones to complete. **Event-driven architecture:** Uses events and callbacks for handling operations efficiently. **Single-threaded model:** Efficiently manages concurrent connections using the event loop. **Cross-platform:** Works on Windows, macOS, and Linux. **Rich Package Ecosystem:** Leverages npm, the largest package repository.