[caseyf2]

We handle a lot less traffic than Shopify (~15-20 million reqs a day) but ActiveRecord isn't a bottleneck and I wouldn't expect to to be [...unless you are talking about something other than the performance of AR as a body of code?]

Instead of "Rails doesn't scale" we should say "Rails runs on Ruby which means that it will consume significantly more CPU and more memory* compared to something else"

In my case, 1 extra server (my estimate) was a small price to pay for developer happiness.

* unless you are running JRuby