There is a gem puppet-ghostbuster which can help you find dead code in puppet projects. To use it, (as...
On the Rails console, assigning an object to a variable can lead to this strange error (without stacktrace): irb > recipient...
Most of our applications use CarrierWave for file uploads. CarrierWave has an integrated processing mechanism for different file versions with...
The recommended additional setup of the spreewald gem, a useful set of cucumber steps, includes adding a file for defining...
We regularly have tasks that need to be performed around a deploy. Be it to notify operations about changed application...
Note Don't use reruns as a mean to work around flaky tests. You should always try to fix those...
The linked rbenv plugin rbenv-each is very helpful to keep QoL gems up to date that are not part...
You don't want sensitive user data in your logs. Background Rails per default filters sensitive data like...
Both knapsack and parallel_tests have the option to split groups by historic execution time. The required logs for this...
For my computer science bachelor's thesis I programmed and evaluated a CLI Test Case Prioritization (TCP) tool for makandra...
Rails' url_for is useful for generating routes from a Hash, but can lead to an open redirect vulnerability.
When you write your next CarrierWave uploader, consider processing your images with libvips instead of ImageMagick. Reasons for libvips
When RubyMine reports Rubocop returning "exit code -1", upgrading Rubocop can be the fix: gem install rubocop "The logs" can...
It most cases it's not necessary to add a version constraint next to your gems in the Gemfile. Since...
If you have a fully functional CI pipeline but no CD, you might find yourself frequently waiting for CI (with...
TL;DR Still has caveats. Code splitting is a feature of JavaScript bundlers that can keep huge libraries out of...
You can use rake --where task to find the source location that defines task: bundle exec rake --where assets:precompile...
Debugging your integration tests, that run a headless Chrome inside a docker image, is tricky. In many cases you can...
The rubocop binary has a few interesting flags: rubocop (using the --parallel default ) scans the current repository for linting issues...
Every Rails response has a default ETag header. In theory this would enable caching for multiple requests to the same...
tl;dr asdf allows you to manage multiple runtime versions with a single CLI tool and is backwards compatible by...
A lot of web applications require being called over https, which is a good thing. It's possible to configure...
By activating strict_loading you force developers to address n+1 queries by preloading all associations used in the index...
Since Ruby 3.2.0 you can measure coverage support for eval statements and support has been added for the simplecov gem...