How to Fix "Throttling Navigation" Error in Angular Auth Guard During Login

Discover effective solutions to resolve the "Throttling Navigation" error encountered in Angular Auth Guard during login, preventing browser hang-ups, specifically in Angular 8 applications.
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How to Fix "Throttling Navigation" Error in Angular Auth Guard During Login

In Angular applications, particularly Angular 8, developers sometimes face the frustrating "Throttling Navigation" error when implementing auth guards during user login. This error usually occurs when consecutive navigations are attempted within a short span, causing browsers like Google Chrome to throttle navigation to prevent the browser from hanging. Here's how you can address this issue.

Understanding the Error

When multiple navigation attempts happen in quick succession, modern browsers, such as Google Chrome, incorporate a safeguard mechanism to throttle these attempts. This throttling ensures that the browser remains responsive and does not hang due to excessive navigation operations. In the context of Angular Auth Guard, this error commonly arises during routing changes triggered upon user authentication.

Steps to Fix the Error

Debouncing Navigation Requests:
To mitigate the error, implement a debouncing mechanism to ensure that only unique navigation requests within a given time frame are processed. This can be achieved by utilizing RxJS operators like debounceTime.

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Introducing a Flag to Track Ongoing Navigations:
Another effective method is to use a flag that tracks whether a navigation process is currently ongoing. If it's set, subsequent navigation requests can be ignored until the current process completes.

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Conclusion

The "Throttling Navigation" error in Angular can significantly impede the usability of your application if not promptly addressed. By employing strategies such as debouncing navigation requests or using a flag to manage concurrent navigations, you can ensure a smoother user experience free from abrupt browser hang-ups.

For developers working with Angular 8 and modern browsers like Google Chrome, understanding and implementing these solutions can greatly enhance the stability and reliability of your application's navigational flow.