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Topics

• Rails vs OOP
• SOLID principles
• Data-centric vs Behaviour-centric
• Ceremony vs Essence
• The Cost of Indirection
• Cohesion
• Testability
• Rails is a detail

Patterns

• Service Objects
  • External Interfaces
  • Responsibility Objects
  • Role Objects
  • Use-Case Objects
  • Service Layer
• Concerns
• DCI
• Not-so-skinny controller