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When I firstly heard about Crystal language, I got really exited. It fixes exactly four problems I sometimes have with Ruby; types, speed, memory consumption and compilation to machine code. After many months silently following its development I decided to try it out for a simple program I need — a simple server standing between Google Maps API and my application to catch the geocoding responses in local Redis instance not to hit the limit imposed on using the service (plus, Google suggests you to do it anyway).

If you have ever generated PDFs in your Ruby apps you were probably also asking yourself how do I test that the PDF turns out the way I want?

If you are deploying Ruby web application on Fedora with Puma (or other) application server and NGINX web server as a proxy, you might encounter SELinux forbidding NGINX to use the Puma socket. Here is how to create a SELinux policy module that you can use during your server provisioning.

If you are setting up your own remote server/VPS you will probably like to make it easy to deploy your code with simple git push. In other words you want to setup something that providers such as Heroku or OpenShift let you do to deploy your code. Luckily, it’s very easy!

If you are using Rails with activerecord-postgis-adapter 3.1.4 perhaps you got into a point where you were suddenly getting the following error: