Refactoring towards Clean Architecture Workshop Symfony Online 2026

Transcript

1. Refactoring 2026-01-20 / Damian Dziaduch / SymfonyOnline 2026 Towards Clean Architecture
2. What is a software architecture?
3. "Software architecture is a set of key decisions and system structures that determine how easy, expensive, and fast it will be to develop and maintain the system in the future"
4. So what is Clean Architecture?
6. Domain The heart of the software - Tactical Domain Design*
7. Domain
8. Application The Use Cases layer
9. Domain Application
10. Adapters Adapts the framework code to application, not other way around
11. Domain Application Adapter
12. Framework The most outer and the most "dirty" layer
13. Domain Application Adapter Framework
14. The f low
15. Kernel, Routing, Security, Middleware, CLI, etc. Framework Adapts framework code to the primary port requirements Primary Adapter De f ines what application can do Primary Port De f ines what application needs Secondary Port Tactical DDD Domain Adapts framework code to the secondary port requirements Secondary Adapter Database, cache, outgoing HTTP, f ile systems, etc. Framework Orchestrates the f low Use Case
16. Let's code!
17. Recap what we have learned
18. • Dependency rule - how the f low goes • Use case per feature - generic • Read models (read f low) and entities (write f low) • Ports & adapters • Modularity & testability due to layers • Order in the code • Easy to switch the "implementation details"
19. Survey
20. About me Since 2011 Engineer Speaker Trainer https://damian.dziaduch.pl