Contents

• Introduction to Hexagonal Architecture
• Core Principles
• Components
• Steps
• Python Example
• Conclusion

Introduction to Hexagonal Architecture

Hexagonal architecture, aka “Ports and Adapters.”

• A strategic design pattern that emphasizes the “separation of applications”
  • The central hub in the architecture is where the main core function resides.
  • This core is surrounded by ports and adapters
    • Ports: gates that leads to the outside world
    • Adapters: keys to the gates where the outside data is translated into a language that the core can understand.
  • “Talk inwards with simple structures; talk outwards through interfaces.”

Why do you use Hexagonal Architecture?

• It is a professional strategy to keep your system flexible and maintainable.
  • Advantages
    • Sepratation of Concerns
      • Clear component rules
        • Easy to understand the structure. Simplifying understanding for new developers
      • Easy troubleshooting
        • If you have business logic issue, examine domain model
        • If you have event issues, examine the service model
        • If you have interface issues, examine the port model
        • etc..
    • Simplified Testing
      • Defined role and independent models make the testing easy and precise

When do you use and not use Hexgonal Architecture?

• Use
  • Business logic focuses on the core domain
  • Dependencies an point inward
• Don’t use
  • If you’re business model is a basic CRUD
    • Transformation and integration only
  • Simple and Non existent domain