Docker workshop

Overview: We recently carried out a short introductory Docker workshop, starting from scratch, installing Docker and taking it through to […]

Unable to start VMs on ESX5i

We came across a weird problem on ESX5i. Occasionally, one of our hosts would suddenly be unable to start any […]

Simple form validation in Wicket

I used to add custom FormValidators to forms where multi-field validation was required (like checking if two copies of an […]

The Palchinsky Principles

My holiday reading this year was “Adapt” by Tim Harford. One of the most interesting parts was about Peter Palchinsky, […]