Aug 5, 2021
I recently ran into a weird issue after switching an application’s container base image from Debian to Alpine Linux. Things worked out fine in staging and sandbox environments, but suddenly in production (of course!) the application failed to resolve a service it needs to talk to.
Jul 12, 2017
Last time we packed a Rails application into a single file so that we can isolate bugs and easily share reproduction steps on GitHub or in a gist.
Jun 26, 2017
As you might know from previous posts, I keep a Rails playground project around. That’s a small application with a bunch of models, controllers and accompanying tests. It allows me to quickly try out a new gem that was mentioned in a blog post, see the effects of a configuration flag, or quickly prototype other ideas.
Jan 7, 2017
In a previous blog post I’ve written about value objects and their benefits. Today I want to see how we can make use of those value objects within our ActiveRecord models.
Dec 3, 2016
In the last couple of weeks I’ve repeatedly stumbled over a smell in a project I’m working on: the classifier of an object was inflected by the prefix of its name. As an analogy, think of the ISBN code, where groups of numbers have a special meaning.