Source: http://worldoftanks.ru/ru/news/pc-browser/1/data_center_world_of_tanks/
Hello everyone,
another interesting article, that did not make it to WG EU, appeared on WG RU server. In it, Wargaming explains how the servers work. Here’s what’s in it.
How it started
When the game started (back in 2011 or so), all the things related to the game (the game itself, forums, player info etc.) were processed by one big server cluster. A cluster of servers is a large group of computers, communicating with each other, acting as one single server (resource). The very first server cluster was in Munich and in 2011, it was moved to Russia. This reduced the ping for RU players significantly. It had one big disadvantage – since there was only one server cluster, that had to be restarted several times per week, when the cluster was down, not a single player could enter the game.
In order to fix that, in 0.7.0, the clusters were moved to multicluster technology. The structure changed and the cluster was split to “center” and “periphery”. “Center” is the database, in which all the user data is stored. “Periphery” is the rest, all the servers on which the players play actually (SS: for our purposes, a periphery is different word for various servers of the cluster, like EU1, EU2). At this point, all the games are running on 9 peripheries. All the players are playing on the periphery servers, nobody is playing on the center one, but it is the center that is operating the periphery. If the center is not working, the players cannot enter a game, but they can continue playing if they already were in it when it crashed.
Where are the servers
Servers are housed in specialized buildings called “data centers”. The closer a data center is to the player, the better. That’s why the WG servers are spread all across the game regions:








