An introduction to Domain Driven Design Rob Allen, February 2024
A presentation at PHPUK 2024 in February 2024 in London, UK by Rob Allen
An introduction to Domain Driven Design Rob Allen, February 2024
It started with a book Rob Allen | @akrabat | social.akrabat.com/@rob
Rob Allen | @akrabat | social.akrabat.com/@rob
DDD provides for the Strategic and Tactical Rob Allen | @akrabat | social.akrabat.com/@rob
Strategic Design Rob Allen | @akrabat | social.akrabat.com/@rob
Domains & Models Rob Allen | @akrabat | social.akrabat.com/@rob
A Domain is something in the real-world Rob Allen | @akrabat | social.akrabat.com/@rob
A Domain is the subject of our project Rob Allen | @akrabat | social.akrabat.com/@rob
A Domain is understood by experts in the space Rob Allen | @akrabat | social.akrabat.com/@rob
A Domain Model is a representation of the Domain Rob Allen | @akrabat | social.akrabat.com/@rob
A Domain Model is an abstraction of reality Rob Allen | @akrabat | social.akrabat.com/@rob
A Domain Model is expressed as diagrams, words, code Rob Allen | @akrabat | social.akrabat.com/@rob
Expressed as a diagram Rob Allen | @akrabat | social.akrabat.com/@rob
Building domain knowledge Rob Allen | @akrabat | social.akrabat.com/@rob
“We have really everything in common with America nowadays except, of course, language” Oscar Wilde Rob Allen | @akrabat | social.akrabat.com/@rob
Ubiquitous Language Rob Allen | @akrabat | social.akrabat.com/@rob
Ubiquitous Language is The agreed concepts, meanings and terms for the project Rob Allen | @akrabat | social.akrabat.com/@rob
You have to talk! Rob Allen | @akrabat | social.akrabat.com/@rob
Ubiquitous Language is Foundational to implementing Domain Driven Design Rob Allen | @akrabat | social.akrabat.com/@rob
In Domain-Driven Design Everything revolves around Ubiquitous Language Rob Allen | @akrabat | social.akrabat.com/@rob
Observations about creating a domain model Rob Allen | @akrabat | social.akrabat.com/@rob
Focus effort where it matters Rob Allen | @akrabat | social.akrabat.com/@rob
Knowledge Crunching Rob Allen | @akrabat | social.akrabat.com/@rob
Knowledge Crunching Event Storming Rob Allen | @akrabat | social.akrabat.com/@rob
By Henning Schwentner - CC BY-SA 4.0
Knowledge Crunching User Story Mapping Rob Allen | @akrabat | social.akrabat.com/@rob
By Dai Fujihara - CC BY-SA 2.0
Knowledge Crunching Event Modelling Rob Allen | @akrabat | social.akrabat.com/@rob
Model change over time Rob Allen | @akrabat | social.akrabat.com/@rob
Managing Domain Complexity Rob Allen | @akrabat | social.akrabat.com/@rob
Bounded Contexts define the boundary for a model Rob Allen | @akrabat | social.akrabat.com/@rob
Bounded Contexts protect the domain model from dilution Rob Allen | @akrabat | social.akrabat.com/@rob
Bounded Contexts are composed into an application Rob Allen | @akrabat | social.akrabat.com/@rob
Context maps Rob Allen | @akrabat | social.akrabat.com/@rob
Tactical Design Rob Allen | @akrabat | social.akrabat.com/@rob
Tactical Design Entities, Value Objects & Aggregates Rob Allen | @akrabat | social.akrabat.com/@rob
Entities & Value Objects Rob Allen | @akrabat | social.akrabat.com/@rob
Tactical Design Storing State Rob Allen | @akrabat | social.akrabat.com/@rob
Tactical Design Services Rob Allen | @akrabat | social.akrabat.com/@rob
Services Rob Allen | @akrabat | social.akrabat.com/@rob
Tactical Design Architecture Rob Allen | @akrabat | social.akrabat.com/@rob
Architecture Rob Allen | @akrabat | social.akrabat.com/@rob
Architecture Rob Allen | @akrabat | social.akrabat.com/@rob
Architecture Rob Allen | @akrabat | social.akrabat.com/@rob
Architecture Rob Allen | @akrabat | social.akrabat.com/@rob
To sum up Rob Allen | @akrabat | social.akrabat.com/@rob
To sum up Rob Allen | @akrabat | social.akrabat.com/@rob
“Domain-Driven Design is about creating shared understanding of the problem space that is reinforced ubiquitously via conversations, code and diagrams.” Nick Tune Rob Allen | @akrabat | social.akrabat.com/@rob
Thank you! Rob Allen | @akrabat | social.akrabat.com/@rob
Photo Credits - Risk: I. Hassan, https://www.flickr.com/photos/iahvector/15342391100 - Event Storming: H Schwentner, https://commons.wikimedia.org/w/index.php?curid=57766348 - Story Mapping: D Fujihara, https://www.flickr.com/photos/49942291@N06/6271934371 Rob Allen | @akrabat | social.akrabat.com/@rob
