What are some use cases for Angular interceptors?

What are some use cases for Angular interceptors?

Angular interceptors are used for handling HTTP requests and responses. Common use cases include adding authentication tokens, logging requests, and handling errors globally.

Can you give me an example of how to implement an interceptor for authentication?

Sure! You can create an interceptor by implementing the HttpInterceptor interface and adding it to your providers. In the intercept method, you can attach the token to the request.

What about error handling? How can interceptors help with that?

Interceptors can catch HTTP errors globally. You can handle specific error codes and display user-friendly messages or redirect users based on the error.

Are there any performance considerations when using interceptors?

Yes, while interceptors are powerful, they can add overhead to your requests. It's important to keep them efficient and avoid unnecessary processing.