I don't understand why we have servers in the first place for any kind of local appliance, they ARE a server already, 256mb of flash costs pennies for storing hundreds of thousands of metrics - almost enough for a year!

Not sure why this is getting downvoted I assume because it has nothing to do with the article but these problems don't exist in applications that never have to reach a server in the first place. Remote access can be solved with a simple relay appliance (ex what homepod does for apple) for the average joe.