I'm creating a simple demo app where I'd like to show in a list all the users that are currently online. The list should update automatically when new users visit the app and when they leave.



Is this possible with Kinvey?

The general principle of implementing such a functionality is to maintain a `lastActive` property on the user object. In your app, periodically (let’s say every 5 minutes), update this property with the current date.



To get the list of currently online users (or, more precise, the users active in the last 5 minutes), just query on `lastActive >= now -5 minutes`. You can execute this query every now and then so you can update the UI accordingly.