Domain Driven Design (... with Flask)

Transcript

1. Domain Driven Design (...with Flask) Michael DiBernardo 12-Sep-2012 @ DjangoToronto

2. What is DDD?

3. Something familiar • Domain driven design separates the model layer

   ("M") of MVC into: • an application tier, • a domain tier, • and an infrastructure tier. (opentaps project docs)

4. Domain is the focus

5. POPOs

6. CODE

7. When to use it? • Non-trivial domain (i.e. not this

   demo) • Iterative process • Access to domain experts / users • Integration with external interfaces

8. “Indeed, one of the ways of establishing control over a

   system is to enforce link- cutting until the graph is hierarchical.” - Fred Brooks (paraphrase from MMM)

9. Model Services Scary outside world Application Repos Presentation (Highly idealized)

10. Thoughts • POPOs in Django. How? Why? • The “secondary

    project” • Web as platform

11. https://github.com/MichaelDiBernardo/ddd-flask-example