Perhaps worth mentioning that the Phoenix creator Chris McCord has written a number of posts on the Fly.io blog since he joined them a year ago (exactly a year today?):
https://fly.io/blog/how-we-got-to-liveview/
https://fly.io/blog/how-safari-ruined-my-tuesday/
https://fly.io/blog/livebeats/
https://fly.io/blog/liveview-its-alive/
I guess that’s part of the reason why the Phoenix blog is less active?