But even when the move was completed, the issue with incorrect configuration and single-threading remained. However, this cannot be done instantly, and moving itself took time. We decided to increase capacity as soon as possible by moving to the most powerful and expensive devices in Amazon. Initially, it seemed to us that the server was overloaded due to the newly introduced vehicles and a gaming nation, as well as with the attention of the community for the major update. One of the gateway services was operating for 375 days, and during a scheduled reboot, a misconfigured version was loaded that used only a single core (we discovered it only on Sunday) and incorrectly proxying IP-addresses. Now, a little more detail on what happened this past weekend.
All of these are not on a single device, but dozens! Plus, a matching server, consisting of many physical devices of entrance gateways, that are proxies to eliminate points of failure, and a server that actually creates battles from players in the queue. These are authorization servers, servers to store user profiles, battle servers, a squad server and a voice communication server. Like other client/server products, our game has a very complex and distributed infrastructure, consisting of a variety of different servers.
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