The Player Accounts team at Riot Games needed to consolidate the player account infrastructure and provide a single, global accounts system for the League of Legends player base. To do this, they migrated hundreds of millions of player accounts into a consolidated, globally replicated composite database cluster in AWS. This provided higher fault tolerance and lower latency access to account data. In this talk, we discuss this effort to migrate eight disparate database clusters into AWS as a single composite MySQL database cluster replicated in four different AWS regions, provisioned with terraform, and managed and operated by Ansible. This talk will briefly overview the evolution of the player accounts services from legacy isolated datacenter deployments to a globally replicated database cluster fronted by our account services and outline some of the growing pains and experiences that got us to where we are today.
