This talk will cover the following related to hexagonal architecture:

Introduction The hexagonal architecture design pattern, also known as “Ports and Adapters”, was introduced by Alistair Cockburn in the early 2000s. With the increase in usage of LLMs as software development tools, this design pattern can help create clear boundaries within applications and make code more understandable and modifiable by AI tools.

Core principles and concepts In this section, I will discuss the fundamental concepts that make hexagonal architecture effective. This includes, the central application core (business logic/domain), ports (interfaces that define contracts), and adapters (implementations that handle external interactions, for example interaction with a database or external services).

Benefits and problem-solving capabilities The discussion will highlight benefits including enhanced testability, improved maintainability by reducing coupling, and easier technology migration. I'll demonstrate how hexagonal architecture addresses common development pain points such as database lock-in, framework dependencies, and the challenge of writing effective unit tests.

Implementation and real-world case study Included in this presentation will be a real-world case study of how hexagonal architecture is implemented in a production application. This example will demonstrate how to handle common scenarios such as database functionality, external API integration, and user management. The case study will show actual Python code, highlighting patterns for repository implementations, service layers, and adapter configurations.

Conclusion and Q&A The presentation concludes with the key takeaways, resources for further learning, and an interactive Q&A session.