The Ultimate Node.js Backend Mastery Guide: Zero to Production Hero

Master Every Backend Concept - From Basics to Advanced Production Patterns Note: This comprehensive guide covers everything you need to know about Node.js backend development. Whether you're preparing for interviews or building production applications, this single resource has you covered. 📑 Table of Contents Introduction to Node.js JavaScript ES6+ Essentials Node.js Architecture & Event Loop Core Modules Complete Guide NPM & Package Management Express.js Framework REST API Design Database Integration Authentication & Authorization Session Management File Upload & Storage Error Handling Input Validation Security Best Practices Rate Limiting & Throttling Caching Strategies WebSockets & Real-Time Message Queues Email & Notifications Payment Integration Logging & Monitoring Testing Strategies Microservices GraphQL APIs Docker & Containers CI/CD Pipelines Deployment Performance Optimization 1. Introduction to Node.js What is Node.js? Definition: Node.js is a JavaScript runtime built on Chr