How do you currently host your Docker container at edge nodes?
(It's a facetious question: unless you're a $100B company you're not doing anything of the sort.)
(It's a facetious question: unless you're a $100B company you're not doing anything of the sort.)
That's not meant to be a snarky question, I genuinely don't understand what business problem that's going to be solved by saving at most 30 ms. Anything written in Rails/Django, talking to a DB, etc. is going to have request latency dominated by other parts of the stack.
I think it's misleading to say that deficiencies of Heroku have anything do to with AWS though. It's really, really easy to set up anycast [https://aws.amazon.com/global-accelerator/] with ECS [especially if you're willing to pay for Fargate]. If your product does something meaningfully different than that, I'd love to know more.
NB: I'm in no way affiliated with AWS or Heroku, just have experience with both in the past.