By code it is not clean is client MasterServer.API hold connection with MasterServer or not. MasterServer has limit in 1000 connections. So My questions: 1. is MasterServer Client API works like this: connect > db requiest> disconnect ? 2. If not that is way how to scale MasterServer 3. MasterServer capacity, If any have experiences with self deployed MasterServer capacity - how many users it can support? Thanks in Advance! UPDATE: I did test and confirm that Master Server keep connection active for servers and clients, so in total it gives only 1000 concurrent user. For client it keep connection till request finish. in my case I did request hosts and it keep client connect to server for ~ 1 minuties.