Implementing NgRx Auto-Login and Solving Lazy-Loaded Effect Issues | NgRx Course #51
Learn how to keep users logged in even after page refresh in your Angular app 🚀
In this tutorial, we solve one of the most common problems in authentication — losing login state on reload. You’ll implement a complete Auto Login system using LocalStorage and NgRx Effects, ensuring a seamless user experience.
What you’ll learn in this video?
✔️ How to store user authentication data in LocalStorage
✔️ How to restore user session on app reload
✔️ Implementing Auto Login with NgRx Effects
✔️ Handling token expiration securely
✔️ Structuring clean and scalable authentication logic
By the end of this video, your Angular app will:
✔ Automatically log users back in
✔ Persist authentication state across refresh
✔ Improve UX like real-world production apps
This is a must-know technique for building secure and scalable Angular authentication systems.
⏱️ Timestamps
00:53 Implementing readUserFromLocalStorage in AuthService
02:14 Handling cases where local storage data is missing or corrupted
04:45 Comparing expiresAt with Date.now() to verify session validity
07:56 Creating the autoLogin action in auth.actions.ts
09:07 Dispatching autoLogin from the AppComponent
11:13 Writing the autoLogin$ Effect with mergeMap
15:13 Troubleshooting: Why the effect doesn't trigger on initial load
16:36 Moving AuthEffects to AppModule for global availability
17:01 Final demo: Refreshing the page while maintaining the user session
📌 This is part of a complete Angular NgRx course—follow the full playlist to master Angular state management and performance optimization. Subscribe and turn on notifications🔔 to keep learning with the Complete Angular NgRx + Redux Toolkit Course.
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