Deepak Giridharagopal discusses "immutable infrastructure", PuppetDB and complex invariants, PuppetDB’s architecture, the experience of bringing Clojure to a Ruby shop and lessons learned from that.
Paul Gross explains how Braintree deals with high availability for their Ruby application.
Alex Gaynor explains how he solved the usual Ruby VM speed problems with Topaz, a high performance VM built on the same technologies that power PyPy.
Joshua Ballanco introduces Immutant, Immutant Overlay, HornetQ and OpenShift to Ruby and Rails developers.
Zsolt Fabok presents several methods that can be used to find areas which are worth testing so that organizations do not have to spend more effort on testing than what is absolutely necessary.
Jim Weirich attempts to lure developers to use Ruby for their daily programming tasks.
Paolo Perrotta discusses the difficulties encountered while learning a new and quite different programming language, in his case Clojure, comparing it with Java and Ruby.
Gareth Rushgrove overviews Ruby on Rails and Django: object caches, fragment and HTTP caching, asset compilation, profiling, log file measurement and framework hooks for instrumentation.
Robert Pitts presents tools and techniques for using Ruby in an Object-Functional style, along with the pros and cons of such an approach.
Jamie Wright introduces some of the tools, libraries, and methods used to build a SaaS system in Ruby on Rails.
Phil Toland discusses using Erlang and Ruby providing backup for 20k network devices running in 8 datacenters across 3 continents for Rackspace’s operations.
Tyler Jennings presents how he ended up choosing Clojure, how he is using a Ruby tool-chain in Clojure, plus advice on introducing Clojure to a team.