Luigi Montanez is the founding engineer of the viral content website http://upworthy.com and in this ATLRUG talk from July 9, 2014, he gives a fascinating insight into one approach to managing the growth of a startup’s web app in the face of very high traffic. Their backend is built upon Ruby on Rails with an effective use of the Fastly CDN to deliver very high performance at scale.
About Frank Rietta
Frank Rietta is specialized in working with startups, new Internet businesses, and in developing with the Ruby on Rails platform to build scalable businesses. He is a computer scientist with a Masters in Information Security from the College of Computing at the Georgia Institute of Technology. He teaches about security topics and is a contributor to the security chapter of the 7th edition of the "Fundamentals of Database Systems" textbook published by Addison-Wesley.