The one reason I'll stay with Railway over Fly is that Fly is not as flexible with diverging CPU/memory requirements. I have a few apps that are memory heavy bu

The one reason I'll stay with Railway over Fly is that Fly is not as flexible with diverging CPU/memory requirements. I have a few apps that are memory heavy but don't need a lot of CPU. My Railway bill reflects that, with almost no CPU charge. And I don't have to think about upgrading or downgrading my instance size at all. If they manage to implement that, they'd be the ideal replacement.