NestJS: Build a Real-Time Social Media API (/w WebSockets)

Published 5/2025
Created by Van Nguyen
MP4 | Video: h264, 1280×720 | Audio: AAC, 44.1 KHz, 2 Ch
Level: All | Genre: eLearning | Language: English | Duration: 181 Lectures ( 26h 57m ) | Size: 15.6 GB

Build a real-time social media API with NestJS & WebSockets featuring chat, notifications, and live user updates

What you’ll learn
Understand the fundamentals of WebSockets, from TCP and HTTP handshakes to persistent connections
Build a real-time chat application using raw WebSocket APIs to gain foundational knowledge
Use Socket IO to implement custom events, rooms, and namespaces for scalable communication
Apply NestJS fundamentals (modules, services, controllers, gateways, guards) in a real-world API
Integrate JWT authentication with WebSockets for secure real-time communication
Build real-time features like messaging, conversation, post, comment
Design a scalable real-time social media backend from scratch
Structure WebSocket gateways and services cleanly within a NestJS codebase
Think from a frontend perspective to shape and deliver real-time data effectively

Requirements
Basic knowledge of JavaScript and TypeScript
Familiarity with Node.js fundamentals (functions, modules, async/await)
Some experience with HTTP APIs (e.g., building or using REST APIs)
No prior experience with WebSockets or NestJS is required — everything will be explained step by step!
Basic knowledge of MongoDB is helpful

Description
You may have heard the phrase: “To build a chat app, you need WebSockets.” But have you ever stopped to ask — why?In this hands-on course, you’ll learn to build a real-time social media API using NestJS and WebSockets (Socket IO) — not just by memorizing syntax, but by understanding the fundamentals behind real-time communication. We’ll explore how sockets work under the hood, how data flows between client and server, and how to architect a system that can scale and respond instantly.Rather than spoon-feeding you code, this course teaches you how to read documentation, think critically, and apply these skills to your own projects. You’ll gain the confidence to build and extend real-time features independently.We start with a deep dive into the fundamentals of WebSockets, from how the TCP handshake works to the HTTP upgrade process that opens a persistent WebSocket connection. You’ll clearly understand what’s happening behind the scenes before writing a single line of code.Next, you’ll build a simple chat app using raw WebSocket APIs, giving you a solid foundation before introducing any libraries. Once you understand the basics, we’ll transition into Socket IO, where you’ll explore its core concepts including custom events, rooms, and namespaces — and how they simplify real-time communication.Once your WebSocket knowledge is solid, we shift gears and jump into NestJS fundamentals. You’ll learn about modules, controllers, services, and guards — and then apply them to build a complete, real-time social media backendWhy This Course?This is not just another crash course. It’s a practical, project-driven guide that helps you think like a backend engineer. If you’re comfortable with JavaScript/TypeScript, have some Node.js or NestJS experience, and want to level up your backend skills with real-time architecture, this course is for you.By the end, you’ll walk away with a complete real-time backend — ready to power your own chat app, live feed, or social platform.

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