Using polymorphic associations, we can have comments assigned to a post as well as comments assigned to other comments.

Overview of Solidus, a maintained fork of Spree, showing how to configure and work with this Rails Engine.

In this episode we create a referral system with permanent links. Users can sign up with referral links which tracks the relationship between the referer and the person referred.

Health Checks are an important part of monitoring an application's health. However, a simple status response may not be sufficient. In this episode, we look at creating a health check which monitors some dependencies of a Rails application.

Adaptive streaming allows the video provider to create a different video for each of the screen sizes (or devices) that he or she wishes to target. In this episode, we look at converting our Progressive Video Streams into Adaptive Bitrate Streams and serving it through Active Storage.