I feel those who point "free" alternatives to Hero Scale have never actually tried to auto-scale their dynos. That gem is not a serious alternative.
David Dollar worked on it for one day and then never committed anything again (except for three months later, one little note: "This gem is a proof of concept and should not be used in production").
In my experience this gem crashes requests frequently (502 errors if I remember well). I don't know what's going on in that code - I wasted some time looking into it with no luck - but something in there is flawed.
Heroku is supposed to be simple. The idea of Heroku is you can focus on the design of your apps. Auto scaling turned out to be a huge pain and waste of time for me. I ran out of patience and moved my Ruby code to the Google App Engine.
David Dollar worked on it for one day and then never committed anything again (except for three months later, one little note: "This gem is a proof of concept and should not be used in production").
In my experience this gem crashes requests frequently (502 errors if I remember well). I don't know what's going on in that code - I wasted some time looking into it with no luck - but something in there is flawed.
Heroku is supposed to be simple. The idea of Heroku is you can focus on the design of your apps. Auto scaling turned out to be a huge pain and waste of time for me. I ran out of patience and moved my Ruby code to the Google App Engine.