Sidekiq is a Ruby Background Processor that manages its queue with a Redis service. Learn the basics of Sidekiq and integrating it with ActiveJob.

Using ActionMailer::Preview preview email samples without sending them. Using Zurb's Foundation for Emails, learn how to use email templates with the Ink framework.

For beginners, learn the basic structure of a Ruby on Rails application and the request lifecycle. Learn how different components of a Rails application interact with each other.

Redis within a Ruby on Rails application has many benefits. Learn to interact with Redis Server and set it up for caching within your application.

Learn how to use one of three charting libraries, Chart.js, Highcharts, or Google Charts, using the Chartkick gem to create simple and unobtrusive charts in your application.