The document discusses hexagonal architecture using Spring Boot, emphasizing the importance of a use case-driven approach and domain-driven design. It critiques traditional layered architecture and promotes a shift to a ports and adapters model. Key challenges in implementation include transactions, validation, and database tuning.

1. Hexagonal architecture
with Spring Boot
Mikalai Alimenkou
@xpinjection
http://xpinjection.com

4. Disclaimer
This talk is based on
personal experience

5. Domain Driven Design
Expectations
Reality

6. Everything is simple!

8. Layered architecture for kids

9. More serious view

10. Help Dasha to find business logic

11. Everything should be Use Case driven

12. Alternative world

13. Ports and adapters thinking

15. Fresh architectural paradigms

16. Spring Boot as game changer

17. Each service has similar structure
SERVICE
DB
QUEUE
UI
API
EXTERNAL
SERVICES
API CONTRACTS
Spring MVC
Spring MVC
Spring Data
Spring
Messaging
RestTemplate
Feign
Spring Cloud
Contracts

18. You could work on business logic

20. There are still some blockers
#1. Transactions
#2. Validation
#3. Thick client
#4. DB tuning
#5. Thinking model

21. Summary
• Change your point of view from layered approach
• Start using ports and adapters approach
• Make business logic use case driven
• Learn how to use existing Spring Boot modules
• Adopt Domain Driven Design ideas
• Be happy unicorn in the rainbow world ;)

23. @xpinjection
http://xpinjection.com
mikalai.alimenkou@xpinjection.com