This talk goes from refactoring into some of the basics about Domain Driven Design.

1. Refactoring towards
Domain Driven Design
DAVID BERLINER

2. The sources of all knowledge:

3. Who am I ?
Developer at BetTech.
I've been coding for a decade.
@manatok

4. “…is a disciplined technique for
restructuring an existing body of code,
altering its internal structure without
changing its external behavior.…”
Martin Fowler

7. + Adding features
+ Shortcuts and hacks
+ Team growth
= increased complexity

8. No thanks!
We're
too busy.

9. TIME
CUMULATIVE FUNCTIONALITY
GOOD DESIGN
NO DESIGN
DESIGN PAY-OFF LINE

10. So...
how do we do it?

13. Refactoring requires
prioritisation

14. Boyscout refactoring

15. What is considered
“code litter”?

18. Domain
Driven
Design

19. Bounded context
Ubiquitous
language

28. Define
model
with
Ubiquitous
Language
Identify
model
with
MODEL DRIVEN DESIGN
Process
model
with
Express
model
with
Express
model
with
Isolate
domain
with
Express
state change
with
Bounded
Contexts Services Entities
Value
Objects
Layered
Architecture Events

31. ANTI-CORRUPTION LAYER

32. ANTI-CORRUPTION LAYER

33. final thoughts

34. + You don’t have to drink ALL
the kool-aid to benefit
+ See the good side of
a messy system
+ Be consistent

35. Thaynouk