Code quality can be measured in four levels: (Working code) Reliable code (minimum) Readable code (ok for short-lived code...

DevOps Curriculum

Der Begriff systemd wird immer umfassender da es sich nicht mehr (wie ursprünglich) nur um ein init Systemd handelt, sondern...

DevOps Curriculum

Linux Kernel Parameter werden üblicherweise schon zur Compile und Startzeit mit brauchbaren Default-Werten geliefert. Allerdings muss man, je nach...

makandra dev

You'll need openssl-3 or newer for servers running 22.04 Ruby version 3.1 uses by default the gem openssl...

Unter Linux gibt es mehrere Dateisysteme. Es ist gut einen Überblick zu haben welche existieren und wie man die Dateisysteme...

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In diesem Kapitel wollen wir uns die Struktur des Linux Dateisystems ansehen. Damit ist in diesem Fall nicht das Dateisystem...

When you are working with SVG files and ImageMagick you can get different results on different machines depending on which...

There is a way to use multiple databases in Rails. You may have asked yourself how you're able to...

tl;dr You can use attribute? as shorthanded version of attribute.present?, except for numeric attributes and associations. Technical Details

The gemspec for gems allows to add metadata to your gem, some of which have a special meaning and are...

You can use Unpoly's up.on with a named listener function and immediately unbind this event listener with { once: true...

In Chrome DevTools you can use getEventListeners(object) to get a list of registered event listeners on the specified object...

When you need information about a gem (like version(s) or install path(s)), you can use the gem binary...

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ruby-warning adds custom processing for warnings, including the ability to ignore specific warning messages, ignore warnings in specific files/directories...

If you're deploying code for your lambda function via terraform, this code is usually zipped and uploaded to Amazon...

Due to the way we setup Jasmine tests in our projects, you may run into various errors when Jasmine boots...

This card explains how to generate an entity relationship diagram for your Rails application. We also show how to limit...

Redis.current will be removed without replacement in redis-rb 5.0. Version 4.6.0 adds deprecation warnings for Redis.current and Redis.current=: `Redis.current...

While we are used to run our JavaScript tests on a test page within our Browser, it's also possible...

makandra dev

I recently was in a weird situation where my (Jest/CLI) tests were referencing a function that was no longer part...

RSpec's let allows you to super into "outside" definitions, in parent contexts. Example: describe '#save' do subject { described_class.new(attributes...

makandra dev

To ensure a consistent code style for JavaScript code, we use ESLint. The workflow is similar to integrating rubocop...

This are the steps I needed to do to add esbuild to an application that used the vanilla rails asset...

DevOps Curriculum

Wir wollen verstehen, welche Hardware-Ressourcen uns zur Verfügung stehen und wie wir mögliche Engpässe und Probleme identifizieren können. Grundsätzlich...