Docker workshop
Overview: We recently carried out a short introductory Docker workshop, starting from scratch, installing Docker and taking it through to the point where a software stack, consisting of several linked… Read more »
Category: Other
eCobertura makes code coverage easy
We used to wait for Jenkins to produce us a Cobertura report and of course nobody read it until delivery time arrived and we realised we hadn’t met the SLAs…. Read more »
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 VMs – the running VMs were fine, but any attempt… Read more »
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 entered password match. However, this approach has some problems –… Read more »
Fault-tolerant ESX datastores for free
Preamble: NFS works great for ESX datastores. Its a whole lot easier to manage than iSCSI and although iSCSI is generally considered to perform better, we find that the flexibility… Read more »
Using mocking to keep development agile
We had built up a mocked service layer for our Wicket Tester unit tests (with Mockito). This enables our unit test to start any page or panel in our app… Read more »
Using Maven for production deployment
We use Maven to manage dependencies during development. This entails adding a pom.xml file to our Eclipse project which defines the jars which the application depends. Maven then takes care… Read more »
The Palchinsky Principles
My holiday reading this year was “Adapt” by Tim Harford. One of the most interesting parts was about Peter Palchinsky, a great russian engineer who was an advisor to both… Read more »
monit – trust is good, control better
monit is a very cool system for keeping your linux servers working – highly recommended. With a few lines of configuration, you can have it check any aspect of your… Read more »
Java logging in development and production
Logging is tricky. Even some major open-source projects don’t do it correctly, so if you use their libraries, you end up with log files you didn’t ask for cluttering your… Read more »