Listing online friends

Hello,

In our game we load a list of the users friends when they login and then show online ones at the top. When I use friendsList there’s an online parameter in the user object but it’s not populated.

How do I go about this? It seems I can follow all my friends to get a list of presences but I’m not sure about the performance impact of doing that over every login specially with a large number of friends. I’m using a global stream to detect presence and update my online/offline friends while playing the game, so I don’t need the follow feature.

Thanks!