The story of how the cloud-king turned its back on Rails and swindled its customersA Rails dyno isn't what it used to be. In mid-2010, Heroku quietly redesigned its routing system, and the change — nowhere documented, nowhere instrumented — radically degraded throughput on the platform. Dollar for dollar a dyno became worth a fraction of its former self. UPDATE 2/17: Rap Genius responds to Heroku'