The task is Backend system for distrubition user info for authorization, server list and credentials for VPN connection and API for iOS.
My requirements is:
1) Easy scaling after your work ( we will add servers as users come, so will be good if you give me description that for after support). Part of the task is too set up 6 servers.
2)Logical distrubition system for clustering several servers in one logical server (e.g. physically USA1, USA2, USA3 servers are integrated in one logical server USA, system balancing to which server client should connect based on servers' load)