Quick question on Fallback Cache User Source

Hey everyone. I’m working with Edge Gateways as a local fallback, and as part of that I setup a user source of type Fallback Cache. I think I’ve got this working but I wanted to clarify as it’s not working as I originally thought.

My original thought was this was going to sync all users from my main gateway down to the edge gateway but that does not appear to be the case. What I think it’s doing is when you log in from the client that is also setup with a fallback, it caches just that user’s logon info. Then it keeps it handy for 15 days (default setting) in case you failover to the edge gateway you got your credentials there.

But what this also means is that:

A) If a user doesn't log on from that particular client, they don’t get cached. So you could have a scenario where users A, B, & C are cached on system 1, and users B, C, & D are cached on system 2 but if the main gateway goes down user D can’t log into to system 1, and user A can’t log into system 2.

B) If you remove a user on the main gateway, those credentials are still cached on the edge system until the 15 days are up.

I suppose I could set up users separately on each edge gateway but then I’m managing multiple user lists, or I could go AD, but customer doesn’t want to deal with IT dept and who can blame them.

Am I understanding this all correctly now or am I still missing something?

Thanks much!