What are the best practices for using authentication guards in Angular CLI?

What are the best practices for using authentication guards in Angular CLI?

When using authentication guards in Angular CLI, it's essential to keep your code modular and reusable. You should create separate guard classes for different authentication scenarios, like admin access or user access. Additionally, always handle unauthorized access gracefully by redirecting users to a login page or showing an appropriate message.

Can you explain how to implement a simple authentication guard?

Sure! To implement a simple authentication guard, you need to create a class that implements the CanActivate interface. In the canActivate method, check if the user is authenticated. If they are, return true; otherwise, redirect them to the login page and return false.

What should I do if I need to protect multiple routes?

You can apply the same guard to multiple routes in your routing module. Just add the guard to the routes you want to protect in the 'canActivate' array. This way, you ensure that all specified routes require authentication.

Are there any performance considerations I should be aware of?

Yes, be mindful of the performance impact of your authentication checks. Avoid making unnecessary API calls in the guard. Instead, use a service to store the authentication state and check it in the guard to minimize delays.