Learn how to use RSpec to write useful tests for Ruby code

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Seemingly it may seem that counting records in the database with ActiveRecord is straightforward. In reality, it looks more complex.

Explore the Sidekiq source code and learn how to use Redis

For those who likes Action Cable but hate writing JavaScript

Explore the Ruby code behind popular solutions to learn how they were created

Discover web frameworks for Ruby

Isolate your business logic and make the code testable

Add Stimulus.js framework to Rails app