Your current filters are…
Keynote by Raffi Krikorian, developer, Twitter.
by Raffi Krikorian and Steve Jenson
Twitter is the largest Ruby on Rails installation on the web right now -- however, we have been moving from solely hosting Rails applications to a mixed Rails and JVM deployment. This migration has been ongoing for a few years at Twitter and we now run several back-end, high-throughput, and critical components on the JVM.