The only missing piece for fly.io is data layer. The given redis is only for caching purpose. Once there is a managed distributed data store add-on, it's done.

The only missing piece for fly.io is data layer. The given redis is only for caching purpose. Once there is a managed distributed data store add-on, it's done. It's very likely liveview will need to hit database. Right now pubsub with redis adapter is the easiest solution for cross-region phoenix application (well, phoenix IS my application!)