Ask HN: How could Rails4 help Heroku?
Reading the comments on this, I'm sensing different ideas of whether a future Rails' multi-threading can actually help Heroku.
Does Unicorn achieve as much as we could hope for from Rails? You have to come down to the source of the problem, trying to solve problems, not symptoms. Also please stop reinventing over and over again things that are already perfectly done - use Erlang or at least reimplement ruby as erlang, then it will be fine. Oh, somebody did this already...
http://elixir-lang.org/ Except this doesn't help a large (compared to erlang) real world user base of Ruby and Rails.