[WillieBKevin]

It is quite an accusation, but I'm far from a bystander in this issue. I have extensive, documented communication with Heroku engineers over the course of 1.5 years (Feb 2011 - June 2012).

I'm not discussing any sort of cooked up statistical models. I'm discussing the real-world experience I had scaling an application on Heroku.

"mud-slinging from one side upon the other"

You imply that I was uninvolved before Rap Genius's expose. I assure you that is not the case. I've chosen a side in this argument well before Rap Genius went public.

[jlouis]

The "you" were addressed to RG, not your experience. I completely agree that scaling is one of the harder problems in computer science. Most people just run a stateless system and hope for the best, but this is a delicate matter and it is a hard problem.

The hard part being a customer or Heroku is that the problem might be on the other side of the fence. And how do you communicate that in a diplomatic way?

Personally my opinion is something along the lines of "If you use Ruby +rails in that configuration, then you deserve the problem".