Daniel Doubrovkine has 2 videos available on Confreaks.TV. Their most popular video is From Zero to API Cache w/ Grape & MongoDB in 10 Minutes which has been viewed 4,472 times since it was posted on 07/01/2012.
Taking over Someone Else's Open-S... at Golden Gate Ruby Conference 2014 1,883 total views
From Zero to API Cache w/ Grape &... at GORUCO 2012 4,472 total views