Nest JS Authentication COMPLETE Guide | Google OAuth, JWT, Cookies & Roles | E-Commerce Series Ep.6

🔥 Episode 6 of the Poster Parlor E-Commerce Series!

In this video, I explain a COMPLETE and PRODUCTION-READY authentication system in NestJS 🚀

🔐 What you’ll learn in this video:
✅ Google OAuth 2.0 Login using NestJS
✅ Access Token & Refresh Token implementation
✅ JWT authentication with HttpOnly Cookies
✅ Secure token rotation strategy
✅ Custom JWT Guard extracting tokens from cookies
✅ Auth Roles & Role-based authorization
✅ GetCurrentUser custom decorator
✅ Clean & scalable auth module structure
✅ Best practices used in real production apps

Ye pura setup plug-and-play reusable architecture hai jo aap kisi bhi Nest JS project me use kar sakte ho — specially E-commerce, SAAS, Booking Apps, Enterprise APIs ke liye.

Time Stamps

00:00 – Introduction

00:08 – Authentication Flow Overview & What We Built So Far

04:21 – Creating the Auth Service (Google OAuth + Tokens Logic)

48:30 – Setting Up Routes in Auth Controller

59:34 – JWT Strategies (Access Token & Refresh Token)

01:25:45 – JWT Auth Guard, Roles Guard & Auth Module Setup

02:08:10 – Integrating with AppModule & Testing Authentication

02:16:51 – Outro


⭐ My Goal

To teach enterprise-grade backend architecture from zero — so you can build your own SaaS, marketplace, ecommerce system, or high-traffic API confidently.

If you are preparing for interviews or building real products with NestJS, this video will save you DAYS of confusion.

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