Is there a way in ng-admin to refresh values (content of the fields) without refreshing the entire page?
For example, if there was a REST API that returns a value that changes over time (e.g. amount of requests in a queue). How could I create an ng-admin page and let the "queue length" field update every 5 seconds?
ng-admin doesn't have such a feature.
You have to write your own page by overwriting the router.
See Adding Custom Pages on the documentation.