[tomlemon]

Rap Genius cofounder:

Random routing is still wayyyyy worse than intelligent routing even if you're processing multiple requests simultaneously on a single dyno (see http://rapgenius.com/1504222)

Requests will still queue, but since time spent queuing at the dyno level doesn't appear in your logs or on New Relic, you'll never know it.

[cpressey]

I think that's one of the real tragedies under all this, and compounding the tragedy is that it's going under-discussed: the performance monitoring is incomplete. If the dyno level queue time was apparent, this issue would have become obvious much sooner.