What I gather from the slides: 1. server loads the data from S3 on start (sessions are sticky to a particular server) 2. user data gets mutated on that server

What I gather from the slides: 1. server loads the data from S3 on start (sessions are sticky to a particular server) 2. user data gets mutated on that server for the lifetime of the session 3. the data gets written back to S3 on session end How are failures handled in 2? If a box goes down, do you not only lose the open connections but also any data that has been changed in that session? If these are game sessions it seems like they'll be long-lived; do you periodically dump back to S3?