CQRS

The Example

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CQRS cover page

CQRS

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About the Book

In 2009 I have had the pleasure of spending a 2 day course and many geek beers with Greg Young talking about Domain-Driven Design specifically focussed on Command Query Responsibility Segregation (CQRS).

The example project I created based on these discussions was very well received by the community and regarded a good reference project to explain and learn the patterns that make up CQRS. I decided to add the different blog posts I wrote about the example into a single book so it is easy to find and read.

You can find some reviews on Amazon and of course the Kindle version and a paperback version.

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Table of Contents

  • Miscellaneous
  • About
  • The cover
  • Lean Startup for Developers
  • To Work Remote
  • CQRS à la Greg Young
  • Queries (reporting)
  • Commands (executing behavior on the domain)
  • Command Handler
  • Internal Events (capturing intent)
  • Domain Behavior
  • Domain Event
  • Internal Domain Event Handler
  • The Domain Repository
  • Domain Repository Contract
  • Data Mining
  • External Events (publishing, letting others know)
  • Eventual Consistency
  • Specifications
  • Some other benefits
  • Finally
  • Domain Events
  • Using domain events for state change
  • Getting the state changes
  • Loading historical domain events
  • The base class
  • Aggregate entities
  • Finally
  • Domain State
  • Event Sourcing
  • Event Versioning
  • Scalability
  • Specifications
  • Black box
  • The BaseTestFixture
  • The BaseTestFixture<TSubjectUnderTest>
  • The PresenterTestFixture<TPresenter>
  • CQRS and Event Sourcing
  • Where is Should?
  • Finally
  • Using conventions with Passive View
  • Passive View
  • The View
  • The Presenter
  • The Magic
  • Reflection
  • The Specifications
  • The Ubiquitous Language is not Ubiquitous
  • Convention over Configuration
  • Configure your Conventions
  • Not just for framework code
  • Trying to make it re-usable
  • Convention over Configuration
  • Why have everything protected?
  • Reflect only once
  • Conventional limits
  • Current state
  • Finally
  • Links
  • Examples
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