Advice generator with Angular/rxjs

I chose this challenge to refresh my knowledge about Angular http request. When I thought that I finished, I realised that the browser is cacheing the requests and after clicking on the button, the values are not changing. So i made a different approach.Instead of getting a random quote from the server, I'm making a random index number on the client side and making a request with the random number. With this approach, the request url is always changing and the browser will not cache the value.