I hesitate to comment because I don't have AAA experience (thank god) but I made this simple platform from scratch that would be good enough for AAA FPS: https:

I hesitate to comment because I don't have AAA experience (thank god) but I made this simple platform from scratch that would be good enough for AAA FPS: https://github.com/tinspin/fuse https://github.com/tinspin/fuse Among the unique features are globally distributed hot-deploy of server side code/resources and globally distributed JSON database over HTTP. It's completely async. concurrent and all threads work on all memory which is not what most systems have if you look under the hood. Only Java (begin the down vote without arguments) has good enough non-blocking IO and memory model for networked concurrency to be workable on the server side, but most implementations are bloated. The real discussion we should have is tick vs event based protocols, I'm 100% convinced we need to move away from tick based protocols.