Domain Driven Design (... with Flask)

A very brief and shallow introduction to Domain Driven Design in Python, using Flask + SQLAlchemy + pymongo as an example environment.

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