Refactoring towards Clean Architecture SymfonyLive Berlin 2026

Slides from the workshop

Transcript

1. Refactoring 2026-04-22 / Damian Dziaduch / SymfonyLive Berlin 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. "Software architecture is a set of trade-o ff s we make within constraints. There is no perfect architecture. Only architecture that f its your context."
5. So what is Clean Architecture?
7. Primary actors The "drivers"
8. Secondary actors The "driven" ones
9. Domain The heart of the software - Tactical Domain Design*
10. Domain
11. Application The Use Cases layer
12. Ports User intentions
13. Domain Application
14. Adapters Connects intentions with technology or infrastructure
15. Domain Application Adapter
16. Framework The most outer and the most "dirty" layer
17. Domain Application Adapter Framework
18. The f low
19. 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
20. Let's code!
21. Recap what we have learned
22. • Primary and secondary actors • Ports & adapters • Dependency rule - how the f low goes • Use case per feature - generic • Read models (read f low) and entities (write f low) • Modularity & testability due to layers • Easy to switch the "implementation details"
23. Survey
24. About me Since 2011 Engineer Speaker Trainer https://damian.dziaduch.pl