Domain Driven Design

Set of blog posts spanning 10 months – building an app Fefactored along the way code to Patterns eg repository

Connect Website to DB – 1999 style

My fork is in private Git repo

Why Should you Care about this strategy?  High performance  Simple  Maintainable  Trust that the app does what it says

What is DDD?  Domain-driven design (DDD) is an approach to develop software for complex needs by connecting the implementation to an evolving model  Placing the project's primary focus on the core domain and domain logic.  Basing complex designs on a model of the domain.  Initiating a creative collaboration

SHOW ME THE CODE!  “A key to being an effective programmer is maximising the portion of a program that you can safely ignore while working on any one section of code.  Classes are the primary tool for accomplishing that objective.

Discussion  EF for UoW and simple CRUD  Dapper for ultra fast reading and simple object mapping (StackOverflow) – SP or no SP?  Unit test each layer  Integration test each layer (less tests, but nice!)

Where Next?  Side project: Flickr, Twitter (auth!)  High perf where needed  Highly testable  Very small classes – 7 items +- 2  Simple  Refactor down levels?  Journey – Repository Pattern, Factories, Domain Events, EntityBase, CodeCoverage, Tell Don’t Ask, State Pattern, Open Closed Principle, IoC?  Highly responsive UI –  fast calls to… ASP.NET WebApi REST?

Thank You!  All links on  One thing to remember:  “Testing is good!!!”  When Chuck Norris throws exceptions, it’s across the room.