Epic's April 2018 Fortnite outage

https://www.epicgames.com/fortnite/en-US/news/postmortem-of-service-outage-4-12

Over the course of the incident we found that call patterns caused cache pressure, connection storms knocked database members offline, node performance issues made things worse, and certain calls reading from primary were all contributing factors leading up to and extending our outage period. We made many different changes to try and restore the account service and this covers the main issues and changes we made.