Resources for mastering Ruby on Rails

Architecture & Design

• Grimm Avdi. Objects on Rails. Notes on flexible application design

Best Practices

• Efficient Rails by Andrew Allen
• Describing the development process used by the Infinum Rails Team.
• Checklist of security precautions for Ruby on Rails applications.
• Best practices for running Rails in production

Understanding framework

• Rebuilding Rails. Understand Rails by Building a Ruby Web Framework

Performance

• The Complete Guide to Rails Performance by Nate Berkopec

Testing

• Rappin N. Rails 5 Test Prescriptions: Build a Healthy Codebase
• Aaron Sumner. Everyday Rails Testing with RSpec. A practical approach to test-driven development

Code

• Real World Rails applications and their open source codebases for developers to learn from