DevOps Curriculum

AWS VPC ist Teil der EC2 Familie und wird benötigt um Netzwerkressourcen bereitzustellen. Es ist komplett mit Software-defined Networking...

tl;dr In Chrome DevTools in the Elements tab or in Firefox in the Inspector tab you can right click...

If you use third party APT sources you might end up with unmaintained packages after removing the external source or...

Git allows you to set push options when pushing a branch to the remote. You can use this to build...

tl;dr In the Elements tab in the Chrome DevTools you can right click on an element and select Store...

github.com

ActiveType::Object inherits from ActiveRecod::Base and is designed to behave like an ActiveRecord Object, just without the database...

DevOps Curriculum

Als DevOps Engineer kann es häufiger vorkommen, dass du ein lokales Testsetup bauen musst, um eine bestimmte Software oder ein...

If you're experiencing that your bundle install command fails with an error message like this, rubygems.org might...

Unpoly's [up-observe], [up-autosubmit] and [up-validate] as well as their programmatic variants up.observe() and up.autosubmit...

tl;dr Since Rails 7+ you can use ComparisonValidator for validations like greater_than, less_than, etc. on dates, numerics...

When terragrunt is relaying information to input variables it's happening via environment variables. Depending on the size of the...

makandra dev

tl;dr git checkout is the swiss army of git commands. If you prefer a semantically more meaningful command for...

Ncdu is a disk usage analyzer with an ncurses interface. It is designed to find space hogs on a remote...

You can use ETags to allow clients to use cached responses, if your application would send the same contents as...

One rule of thumb I try to follow in capybara tests is using capybara matchers and not plain rspec matchers...

makandra dev

tl;dr git checkout is the swiss army of git commands. If you prefer a semantically more meaningful command for...

New versions of wkhtmltopdf dissallow file:// URLs by default. You can allow them by passing --enable-local-file-access.

You have uncommited changes (you can always check by using git status), which you want to discard.

tl;dr In RubyMine you can use find and replace with capture groups (.*?) and backreferences $1 (if you have several...

workingdraft.de

The robots.txt file and HTML tag can be used to control the behavior of search engine crawlers. Both have different...

If the project you're working on has, say, 39 repositories and counting in GitLab and you need all the...

Ruby's standard library includes a class for creating temporary directories. Similar to Tempfile it creates a unique directory name...

tl;dr Since Rails 6+ you can use before? and after? to check if a date/time is before or after...

wpostats.com

Case studies and experiments demonstrating the impact of web performance optimization (WPO) on user experience and business metrics.