In the last ten years we have seen the emergence of things like lean startup, continuous delivery, DevOps, and all these movements around how to not only build things correctly, but also around making sure to build the correct thing. Now it's time to help leaders in large enterprises to understand how to move faster and adapt to changing circumstances.
Deepak Giridharagopal explains the config management and automation tool Puppet, the concept of Immutable Deployments, and how Puppet DB (written in Clojure) allows to monitor and query systems managed with Puppet. Also: why PuppetDB is written in Clojure.
Patrick Debois discusses the ideas behind DevOps, popular DevOps tools like Chef and Puppet, DevOps vs NoOps, and much more.
In this interview Jez Humble discusses the concept of continuous delivery, which implies that software should always be production ready throughout its lifecycle. That means that every build could be released into production and run effectively. Continuous delivery involves build and deployment automation, continuous integration, test automation, managing infrastructure and environments and more.
John Leach explains how Brightbox uses Virtualization in the data center and whether Virtualization causes performance problems. Also: a look at a few Unix tools and Linux features that Ruby developers might not know about.