Modern users expect instant updates — live chat messages, collaborative editing, real-time notifications, live dashboards. But building these features goes far beyond just opening a connection. Without a solid grasp of the WebSocket protocol, connection lifecycle management, scaling patterns, and how to integrate real-time streams into a Node.js backend, most teams end up with fragile implementations that break under load or behave unpredictably in production. This course takes you from the fundamentals of the WebSocket protocol to building production-ready real-time features with Node.js. You will start by understanding what makes WebSockets different from traditional HTTP, then move into the popular ws library to set up your first bidirectional connection. You will learn how to handle connection lifecycles gracefully, broadcast messages efficiently, and integrate real-time events with a REST API. From there, you will explore Socket.IO to simplify reconnection, fallback, and room management, and finally tackle the hardest part — scaling WebSocket servers horizontally so your application stays fast and reliable as traffic grows. This course is designed for Node.js developers who already know how to build REST APIs and want to add real-time capabilities to their applications. It is ideal for backend engineers building chat systems, collaboration tools, dashboards, or notification services who want a structured, practical path rather than scattered tutorials. If you have been postponing real-time features because the path felt unclear, this course gives you a clear, hands-on roadmap. Start building real-time features users will love.