Marcin Jakubowski

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  Ruby on Rails for Ecommerce: Solidus Vs. Spree [2022 Update]

• ActiveRecord - Part 2: Useful methods

• ActiveRecord - Part 1: N+1 Queries Problem

• SOLID Principles #5 - Dependency Inversion Principle

• SOLID Principles #4 - Interface Segregation Principle 

• SOLID Principles #3: Liskov Substitution Principle

• SOLID Principles #1: Single Responsibility Principle