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<h1 id="awesome-domain-driven-design-awesome">Awesome Domain-Driven
Design <a href="https://github.com/sindresorhus/awesome"><img
src="https://cdn.rawgit.com/sindresorhus/awesome/d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg"
alt="Awesome" /></a></h1>
<blockquote>
<p>A curated list of Domain-Driven Design (DDD), Command Query
Responsibility Segregation (CQRS), Event Sourcing, and Event Storming
resources.</p>
</blockquote>
<p><strong>Check out my <a href="https://buildplease.com">blog</a> and
<a href="https://buildplease.com/pages/dddweekly/">weekly DDD
newsletter</a> or say hi on <a
href="https://twitter.com/heynickc">Twitter</a>!</strong></p>
<p><strong><a
href="https://en.m.wikipedia.org/wiki/Domain-driven_design">Domain-Driven
Design (DDD)</a></strong> is an approach to software development for
complex needs by connecting the implementation to an evolving model. The
premise of Domain-Driven Design is the following:</p>
<ul>
<li>placing the project’s primary focus on the core domain and domain
logic</li>
<li>basing complex designs on a model of the domain</li>
<li>initiating a creative collaboration between technical and domain
experts to iteratively refine a conceptual model that addresses
particular domain problems</li>
</ul>
<p>The term was coined by Eric Evans in his book of the same title.</p>
<p><strong><a
href="http://codebetter.com/gregyoung/2010/02/16/cqrs-task-based-uis-event-sourcing-agh/">Command
Query Responsibility Segregation (CQRS)</a></strong> is simply the
creation of two objects where there was previously only one. The
separation occurs based upon whether the methods are a command or a
query (the same definition that is used by Meyer in Command and Query
Separation, a command is any method that mutates state and a query is
any method that returns a value).</p>
<p><strong><a
href="http://www.martinfowler.com/eaaDev/EventSourcing.html">Event
Sourcing</a></strong> the fundamental idea of Event Sourcing is that of
ensuring every change to the state of an application is captured in an
event object, and that these event objects are themselves stored in the
sequence they were applied for the same lifetime as the application
state itself.</p>
<p><strong><a
href="https://ziobrando.blogspot.com/2013/11/introducing-event-storming.html">Event
Storming</a></strong> is a workshop format for quickly exploring complex
business domains.</p>
<h2 id="contents">Contents</h2>
<ul>
<li><a href="https://github.com/heynickc/awesome-ddd/">Awesome
Domain-Driven Design</a>
<ul>
<li><a href="#contents">Contents</a></li>
<li><a href="#books">Books</a></li>
<li><a href="#free-ebooks">Free eBooks</a></li>
<li><a href="#training-courses">Training Courses</a></li>
<li><a href="#video-collections">Video Collections</a></li>
<li><a href="#community-resources">Community Resources</a></li>
<li><a href="#blogs">Blogs</a></li>
<li><a href="#sample-projects">Sample Projects</a>
<ul>
<li><a href="#go">GO</a></li>
<li><a href="#net-cf">.NET (C#/F#)</a></li>
<li><a href="#haskell">Haskell</a></li>
<li><a href="#idris">Idris</a></li>
<li><a href="#javascript--typescript">JavaScript / TypeScript</a></li>
<li><a href="#jvm-languages">JVM languages</a></li>
<li><a href="#php">PHP</a></li>
</ul></li>
<li><a href="#libraries-and-frameworks">Libraries and Frameworks</a>
<ul>
<li><a href="#go-1">GO</a></li>
<li><a href="#net">.NET</a></li>
<li><a href="#databases">Databases</a></li>
<li><a href="#elixir">Elixir</a></li>
<li><a href="#javascript--typescript-1">JavaScript / TypeScript</a></li>
<li><a href="#jvm">JVM</a></li>
<li><a href="#php-1">PHP</a></li>
<li><a href="#python">Python</a></li>
<li><a href="#ruby">Ruby</a></li>
</ul></li>
<li><a href="#podcasts-and-interviews">Podcasts and Interviews</a></li>
<li><a href="#conferences">Conferences</a></li>
<li><a href="#user-groups">User Groups</a></li>
<li><a href="#tools">Tools</a></li>
<li><a href="#license">License</a></li>
</ul></li>
</ul>
<h2 id="books">Books</h2>
<ul>
<li><a href="https://buildplease.com/pages/now-what/">Applying Domain
Driven Design with CQRS and Event Sourcing</a> - A walkthrough of using
EventStorming and other modeling techniques to build a CQRS and Event
Sourcing-based prototype for a fictional business domain.</li>
<li><a
href="https://www.manning.com/books/architecture-modernization">Architecture
Modernization</a> - Concrete tools, techniques, and processes to align
software architecture with your business domains, organizational design,
team topologies, and corporate strategy.</li>
<li><a
href="https://www.manning.com/books/collaborative-software-design">Collaborative
Software Design</a> - A practical guide for effectively involving all
stakeholders in the design of software.A practical guide for effectively
involving all stakeholders in the design of software.</li>
<li><a href="https://leanpub.com/cqrs">CQRS</a> - Notes by Mark Nijhof
from his experiences learning DDD and CQRS from Greg Young. There is an
extensive sample project that accompanies this book.</li>
<li><a href="https://amzn.com/0321125215">Domain-Driven Design: Tackling
the Complexity at the Heart of Software</a> - The canonical book that
coined the term Domain-Driven Design. Also known as the “Blue
Book.”</li>
<li><a
href="https://www.amazon.com/Domain-Driven-Design-Distilled-Vaughn-Vernon/dp/0134434420">Domain-Driven
Design Distilled</a> - Very good starter book before you read <a
href="https://vaughnvernon.co/?page_id=168#iddd">Implementing
Domain-Driven Design</a> or <a
href="https://amzn.com/0321125215">Domain-Driven Design: Tackling the
Complexity at the Heart of Software</a>.</li>
<li><a href="https://leanpub.com/ddd-in-php">Domain-Driven Design in
PHP</a> - Real examples written in PHP showcasing DDD Architectural
Styles, Tactical Design, and Bounded Context Integration.</li>
<li><a
href="https://blog.arkency.com/domain-driven-rails/">Domain-Driven
Rails</a> - Domain-Driven Rails describes 11 techniques (from Bounded
Contexts to Event Sourcing) that you can use separately and together in
new and old Rails apps to achieve better architecture.</li>
<li><a
href="https://pragprog.com/book/swdddf/domain-modeling-made-functional">Domain
Modeling Made Functional</a> - Tackle Software Complexity with
Domain-Driven Design and F#.</li>
<li><a href="http://martinfowler.com/books/dsl.html">Domain Specific
Languages</a> - Tangentially connected to DDD, describes the importance
of the Ubiquitous Language and working together with domain experts,
along with lots of technical details.</li>
<li><a href="https://buildplease.com/products/fpc-v2/">Event Sourcing
and CQRS with .NET Core and SQL Server</a> - A walkthrough of using
Domain-Driven Design with Event Sourcing and CQRS using ASP.NET Core and
SQL Server in production.</li>
<li><a
href="https://www.amazon.com/Hands-Domain-Driven-Design-NET-dp-1788834097/dp/1788834097">Hands-On
Domain-Driven Design with .NET Core</a> - Tackling complexity in the
heart of software by putting DDD principles into practice by Alexey
Zimarev.</li>
<li><a
href="https://www.amazon.com/Implementing-Domain-Driven-Design-Vaughn-Vernon/dp/0321834577">Implementing
Domain-Driven Design</a> - Also a canonical book presenting a top-down
approach to understanding Domain-Driven Design. Also known as the “Red
Book.”</li>
<li><a
href="https://leanpub.com/implementing-ddd-cqrs-and-event-sourcing">Implementing
DDD, CQRS and Event Sourcing</a> - Learn how to implement DDD, CQRS and
Event Sourcing. Understand the theory and put it into practice with
JavaScript and Node.js.</li>
<li><a href="https://leanpub.com/introducing_eventstorming">Introducing
Event Storming: An act of Deliberate Collective Learning</a> - The
deepest tutorial and explanation about EventStorming, straight from the
inventor.</li>
<li><a
href="https://www.amazon.com/Learning-Domain-Driven-Design-Aligning-Architecture/dp/1098100131/">Learning
Domain-Driven Design: Aligning Software Architecture and Business
Strategy</a> - Learn the essential patterns and practices of
domain-driven design and how to apply them in your day-to-day work, both
in greenfield and brownfield projects.</li>
<li><a
href="https://www.amazon.com/Microsoft-NET-Architecting-Applications-Enterprise/dp/0735685355/">Microsoft
.NET - Architecting Applications for the Enterprise (2nd Edition)</a> -
A software architect’s digest of core practices, pragmatically
applied.</li>
<li><a
href="https://www.amazon.com/Patterns-Principles-Practices-Domain-Driven-Design/dp/1118714709">Patterns,
Principles, and Practices of Domain-Driven Design (1st Edition)</a> -
Methods for managing complex software construction following the
practices, principles and patterns of Domain-Driven Design with code
examples in C#.</li>
<li><a
href="https://www.manning.com/books/secure-by-design?a_aid=danbjson&amp;a_bid=0b3fac80">Secure
by Design</a> - Shows how to use Domain-Driven Design to avoid security
vulnerabilities.</li>
<li><a
href="https://www.manning.com/books/specification-by-example">Specification
by Example</a> - This book distills from the experience of leading teams
worldwide effective ways to specify, test, and deliver software in
short, iterative delivery cycles. Case studies in this book range from
small web startups to large financial institutions, working in many
processes including XP, Scrum, and Kanban.</li>
<li><a href="https://leanpub.com/esversioning">Versioning in an Event
Sourced System</a> - Have you had troubles with versioning an Event
Sourced system? Just getting into a new Event Sourced system for the
first time? This book is the definitive guide of how to handle
versioning over long periods of time.</li>
<li><a
href="https://learning.oreilly.com/library/view/what-is-domain-driven/9781492057802/">What
is Domain-Driven Design?</a> - A quick read exploring the core patterns
and principles of Domain-Driven Design, as well as strategies for
applying DDD in brownfield projects.</li>
<li><a
href="https://www.manning.com/books/writing-great-specifications">Writing
Great Specifications</a> - Writing Great Specifications is an
example-rich tutorial that teaches you how to write good Gherkin
specification documents that take advantage of Specification by
Example’s benefits.</li>
<li></li>
</ul>
<h2 id="free-ebooks">Free eBooks</h2>
<ul>
<li><a href="https://leanpub.com/theanatomyofdomain-drivendesign">The
Anatomy of Domain-Driven Design - The Infographic</a> - An infographic
on the anatomy of Domain-Driven Design.</li>
<li><a
href="https://dotnet.microsoft.com/download/thank-you/aspnet-ebook">Architecting
Modern Web Applications with ASP.NET Core and Microsoft Azure</a> -
Provides end-to-end guidance on building monolithic web applications
using DDD, ASP.NET Core, and Azure. <a
href="https://github.com/dotnet-architecture/eShopOnWeb">eShopOnWeb
sample</a></li>
<li><a
href="https://www.cosmicpython.com/book/preface.html">Architecture
Patterns with Python</a> - A book about Pythonic application
architecture patterns for managing complexity.</li>
<li><a
href="https://msdn.microsoft.com/en-us/library/jj554200.aspx">CQRS
Journey</a> - Exploring CQRS and Event Sourcing.</li>
<li><a href="https://dddeurope.com/15years">Domain-Driven Design: The
First 15 Years</a> - To celebrate the anniversary, we’ve asked prominent
authors in the software design world to contribute old and new essays.
With contributions by Martin Fowler, James Coplien, Rebecca Wirfs-Brock,
Mel Conway, and many more.</li>
<li><a
href="http://domainlanguage.com/wp-content/uploads/2016/05/DDD_Reference_2015-03.pdf">DDD
Reference</a> - A summary of the patterns and definitions of DDD.</li>
<li><a
href="https://www.infoq.com/minibooks/domain-driven-design-quickly">Domain
Driven Design Quickly</a> - Domain Driven Design Quickly is a short,
quick-readable summary and introduction to the fundamentals of DDD.</li>
<li><a href="http://dddcommunity.org/library/vernon_2011/">Effective
Aggregate Design</a> - In this three-part series, Vaughn Vernon walks
through some common design pitfalls, discusses the pros and cons of
various aggregate modeling choices, and provides rules of thumb to guide
modeling of aggregates.</li>
<li><a
href="http://domainlanguage.com/wp-content/uploads/2016/04/GettingStartedWithDDDWhenSurroundedByLegacySystemsV1.pdf">Getting
Started with DDD when Surrounded by Legacy Systems</a> - Describes three
strategies for getting started with DDD when you have a big commitment
to legacy systems.</li>
<li><a href="https://leanpub.com/livingdocumentation">Living
Documentation by Design, with Domain-Driven Design</a> - Discover how a
Living Documentation can help you in all aspects of your projects, from
the business goals to the business domain knowledge, architecture and
design, processes and deployment, even if you hate writing
documentation.</li>
<li><a
href="https://dotnet.microsoft.com/download/thank-you/microservices-architecture-ebook">.NET
Microservices: Architecture for Containerized .NET Applications</a> - An
introduction to developing microservices-based applications and managing
them using containers. <a
href="https://github.com/dotnet-architecture/eShopOnContainers">eShopOnContainers
sample</a></li>
<li><a href="https://docs.wolkenkit.io/1.1.0/downloads/brochure/">The
Semantic JavaScript Backend for Event-Driven Development</a> - A 68
pages long free ebook on what DDD, CQRS and event-sourcing are, and how
they fit each other.</li>
<li><a
href="https://pages.xebia.com/domain-driven-design-magazine-xebia">DDD
Magazine from Xebia #1</a> - This magazine is packed with visionary and
practical insights, based on personal, business, and customer
experiences to support you on your DDD journey</li>
<li><a href="https://leanpub.com/visualcollaborationtools/">Visual
Collaboration Tools</a> - Visual Collaboration Tools is a book for teams
building software. It describes tools that help us in our daily job, and
also present field stories from different practitioners.</li>
</ul>
<h2 id="training-courses">Training Courses</h2>
<ul>
<li><a
href="https://learn-particular.thinkific.com/courses/adsd-online">Advanced
Distributed Systems Design</a> - Online training course from Udi Dahan.
Udi’s live training schedule can be found <a
href="http://udidahan.com/training/">here</a>.</li>
<li><a href="https://training.dddeurope.com/">DDD Workshops across
Europe and Online</a> - Public Workshops by Eric Evans, Alberto
Brandolini, Mathias Verraes, Rebecca Wirfs-Brock, Nick Tune, and many
more.</li>
<li><a
href="https://xebia.com/academy/en/search?query=Domain-driven%20design">DDD
Workshop by Xebia</a> - public and in-house Domain-driven design
workshops from foundation to professional level.</li>
<li><a
href="https://www.informit.com/store/domain-driven-design-livelessons-video-training-9780134597324">Distilling
Domain-Driven Design</a> - Vaughn Vernon’s online training course.</li>
<li><a href="http://elearn.domainlanguage.com/">Domain Language
eLearning</a> - Using our video lessons with Eric Evans, author of the
original book on Domain-Driven Design (DDD), teach yourself techniques
for evolving practical models that improve your software — not just your
documents.</li>
<li><a href="https://www.youtube.com/@EventSourcery">Event Sourcery</a>
- Introduction to DDD, CQRS, and Event Sourcing.</li>
<li><a
href="https://elearning.dsolemorera.com/courses/eventstorming-fundamentals">EventStorming
Fundamentals Course</a> (<a
href="https://elearning.dsolemorera.com/courses/fundamentos-eventstorming">also
in Spanish</a>) - learn the fundamentals of EventStorming. Everything
about EventStorming with examples.</li>
<li><a href="http://subscriptions.viddler.com/GregYoung/">Greg Young’s
CQRS Class</a> - These videos include the entirety of Greg Young’s DDD,
CQRS, and Event Sourcing class.</li>
<li><a href="https://github.com/DevLyon/mixter">Mixter</a> - CQRS and
Event Sourcing Koans.</li>
<li><a
href="https://nomadphp.com/product/introduction-event-sourcing-cqrs/">Nomad
PHP</a> - Introduction to Event Sourcing and CQRS.</li>
<li><a href="https://pluralsight.com">Pluralsight</a>
<ul>
<li><a
href="https://www.pluralsight.com/courses/domain-driven-design-fundamentals">Domain-Driven
Design Fundamentals</a> - Teaches the fundamentals of Domain-Driven
Design (DDD) through a demonstration of customer interactions and a
complex demo application, along with advice from Eric Evans.</li>
<li><a
href="https://www.pluralsight.com/courses/domain-driven-design-in-practice">Domain-Driven
Design in Practice</a> - A descriptive, in-depth walk-through for
applying Domain-Driven Design principles in practice.</li>
<li><a
href="https://www.pluralsight.com/courses/modern-software-architecture-domain-models-cqrs-event-sourcing">Modern
Software Architecture: Domain Models, CQRS, and Event Sourcing</a> -
This course covers DDD analysis patterns helpful in discovering the
top-level architecture of a business domain. Architects and developers
will find details of implementation patterns such as Domain Model, CQRS,
and Event Sourcing.</li>
</ul></li>
<li><a href="https://blog.arkency.com/ddd-training/">Rails + Domain
Driven Design Workshop</a> - Introduction to DDD, fundamentals of CQRS
&amp; Event Sourcing for Ruby/Rails developers.</li>
<li><a
href="https://cognitiveclass.ai/courses/reactive-architecture-cqrs/">Reactive
Architecture: CQRS and Event Sourcing</a> - This course will discuss the
reasons we use CQRS/ES, what benefits it provides us, but also what it
will cost us to use. We will see how CQRS/ES can impact the scalability,
consistency, and availability of our application.</li>
<li><a
href="https://cognitiveclass.ai/courses/reactive-architecture-ddd/">Reactive
Architecture: Domain Driven Design</a> - Use DDD to decompose a problem
domain into manageable parts. Learn how those parts can become the
foundation of Reactive Microservices and Reactive Architecture. Free,
online, self-paced. Certificate offered upon completion.</li>
<li><a
href="https://spatie.be/products/event-sourcing-in-laravel">Spatie’s
Event Sourcing Course</a> - Learn how to build event sourced
applications in Laravel using Spatie’s event-sourcing package. Has 2
hours of video content and an accompanying ebook.</li>
</ul>
<h2 id="video-collections">Video Collections</h2>
<ul>
<li><a href="https://dddeurope.com/videos">DDD Europe</a> - Recordings
of talks given at DDD Europe.</li>
<li><a href="https://skillsmatter.com/skillscasts">SkillsCasts by
SkillsMatter</a> - Searching DDD returns various talks given by Greg
Young, Alberto Brandolini, and Dan North, etc.</li>
<li><a
href="https://www.youtube.com/watch?v=veTVAN0oEkQ&amp;list=PLve553MhJLs4YkEnHmOjWJv0B-6WY0-JI">Alberto
Brandolini: Event Storming</a> - A YouTube collection of talks given by
Alberto Brandolini on Event Storming.</li>
<li><a href="https://vimeo.com/showcase/gatengineering">GlobalAppTesting
TechTalks</a> - A vimeo channel focused on DDD and CQRS.</li>
<li><a
href="https://www.youtube.com/watch?v=JHGkaShoyNs&amp;list=PL5XpN_ZVafKLePdxruDfdfi-IiZtXz-k9">Greg
Young</a> - A YouTube collection of various talks given by Greg
Young.</li>
<li><a
href="https://www.youtube.com/channel/UCcpKGt6MVvz7dISXLlMGmag">Explore
DDD videos</a> - Recordings of the talks given at the Explore DDD
conference.</li>
<li><a
href="https://www.youtube.com/channel/UCJCpnslPdb_Dl8DKokXC3HA">KanDDDinsky</a>
- A YouTube collection of talks given at KanDDDinsky.</li>
<li><a
href="https://www.youtube.com/channel/UCob_jOzzpxBp-di-x0vLlwA">Virtual
Domain-driven design</a> - A youtube collection of recorded meetups
session from Virtual Domain-driven design</li>
<li><a
href="https://youtube.com/playlist?list=PLvMNoWK93wtnu9JcSEYnFRgzqbxtLtZZ4">Visuality
DDD webinars</a> - A YouTube collection of webinars focused on DDD in
Ruby on Rails</li>
<li><a href="https://www.youtube.com/watch?v=ez9GWESKG4I">The Art of
Discovering Bounded Contexts by Nick Tune</a> - Session from 2017
DevoxxUK on how to define bounded contexts</li>
</ul>
<h2 id="community-resources">Community Resources</h2>
<ul>
<li><a
href="https://groups.google.com/forum/?utm_source=digest&amp;utm_medium=email#!forum/dddcqrs">DDD/CQRS
Google Group</a> - An active mailing list and an excellent resource to
ask questions and learn fine-grained details about DDD/CQRS.</li>
<li><a href="https://groups.google.com/g/ddd-es">DDD-es Google Group</a>
- The Google Group to discuss Domain-Driven Design in Spanish.</li>
<li><a href="https://groups.google.com/forum/#!forum/dddinphp">DDDinPHP
Google Group</a> - The place to discuss Domain-Driven Design, CQRS,
Event Sourcing, Model Storming, Hexagonal Architecture, Distributed
Systems, Reactive… in the context of PHP.</li>
<li><a href="https://groups.google.com/g/eventstorming">EventStorming
Google Group</a> - The Google Group to discuss EventStorming.</li>
<li><a
href="https://www.visuality.pl/posts/introduction-to-ddd-in-ruby-on-rails">DDD
in Ruby on Rails</a> - A collection of articles on Domain-Driven Design
in Ruby on Rails</li>
<li><a href="https://www.reddit.com/r/ddd_ruby/">DDD in Ruby
subreddit</a> - A subreddit for Ruby developers interested in
Domain-Driven Design.</li>
<li><a href="https://github.com/ddd-cqrs-es/community">DDD/CQRS/ES
Discord</a> - A Discord (old Slack) team for those who want to chat
about Domain-Driven Design, CQRS, Event Sourcing and sometimes random
things. Main channel is language and framework agnostic.</li>
<li><a href="https://discord.gg/KsYaHNNn33">Domain StoryTelling
Discord</a> - A Discord team about Domain StoryTelling
(#domain-storytelling channel) by <a
href="https://twitter.com/hofstef"><span class="citation"
data-cites="hofstef">@hofstef</span></a>. The homepage is at <a
href="http://domainstorytelling.org/">domainstorytelling.org</a>.</li>
<li><a
href="http://softwareengineering.stackexchange.com/questions/tagged/domain-driven-design">Software
Engineering Stack Exchange</a> - Software Engineering Stack Exchange
questions tagged <em>domain-driven-design</em>.</li>
<li><a
href="http://codereview.stackexchange.com/questions/tagged/ddd">Code
Review Stack Exchange</a> - Code Review Stack Exchange questions tagged
<em>domain-driven-design</em>.</li>
<li><a
href="https://stackoverflow.com/questions/tagged/domain-driven-design">Stack
Overflow</a> - Stack Overflow questions tagged
<em>domain-driven-design</em>.</li>
<li><a href="https://github.com/sebastianharko/adv-es-cqrs-ddd">Advanced
Topics in Event Sourcing / CQRS / DDD</a> - Advanced Topics in Event
Sourcing / CQRS / DDD list compiled and maintaned by @<a
href="https://github.com/sebastianharko">sebastianharko</a>.</li>
<li><a
href="https://www.quora.com/topic/Domain-Driven-Design-DDD">Quora</a> -
Questions tagged <em>domain-driven-design</em>.</li>
<li><a href="http://slackin.wolkenkit.io/">wolkenkit Slack</a> - A Slack
team on DDD, event-sourcing, CQRS and wolkenkit.</li>
<li><a
href="https://github.com/mariuszgil/awesome-eventstorming">Awesome Event
Storming</a> - awesome list that focuses only on Event Storming.</li>
<li><a
href="https://github.com/hofstef/awesome-domain-storytelling">Awesome
Domain Storytelling</a> - awesome list that focuses only on Domain
Storytelling.</li>
<li><a href="https://virtualddd.com">Virtual Domain-driven design
community</a> - Online meetups with panel discussions, online
collaborations and resource sharing.</li>
<li><a href="https://www.dddheuristics.com/">Domain-driven design
heuristics</a> - Domain-Driven Design Heuristics is a community driven
site to document and discuss about Design Heuristics.</li>
<li><a href="https://github.com/valignatev/ddd-dynamic">Domain-Driven
Design in dynamic languages GitHub</a> - GitHub’s profile of
Domain-Driven Design in dynamic languages.</li>
<li><a href="https://github.com/ddd-crew">Domain-Driven Design Crew
GitHub</a> - GitHub’s profile of Domain-Driven Design Crew.</li>
<li><a href="https://github.com/ddd-crew/context-mapping">Context
Mapping by ddd-crew</a> - Context Mapping Cheatsheet and Starter Kit by
ddd-crew.</li>
<li><a href="https://dddna.net/">DDD North America</a> - Upcoming live
training, events, and user groups across North America.</li>
</ul>
<h2 id="blogs">Blogs</h2>
<ul>
<li><a href="https://aardling.eu/en/insights">Aardling Blog</a> - DDD
and software design articles from Mathias Verraes and others.</li>
<li><a href="https://buildplease.com">Nick Chamberlain</a> - Helpful
development and design advice for .NET developers.</li>
<li><a href="https://ardalis.com/blog">Ardalis.com</a> - Steve Smith.
Pluralsight author and author of <a
href="https://www.pluralsight.com/courses/domain-driven-design-fundamentals">DDD
Fundamentals</a> course and Microsoft <a
href="https://github.com/dotnet-architecture/eShopOnWeb">eShopOnWeb
sample app</a>.</li>
<li><a href="http://dddweekly.com">DDD Weekly</a> - Weekly curated links
related to DDD/CQRS/ES.</li>
<li><a href="http://danielwhittaker.me">Daniel Whittaker</a> - Want to
learn about CQRS and Event Sourcing? This blog is packed with
step-by-step articles to give you a head start.</li>
<li><a href="http://cyrille.martraire.com">Cyrille Martraire</a> - Being
so immersed in finance while still in love with programming, I’m
naturally a big fan of Domain-Driven Design by Eric Evans, along with
TDD, BDD and agile/XP practices.</li>
<li><a href="https://lostechies.com/jimmybogard/">Jimmy Bogard</a> - I
focus on DDD, distributed systems, and any other acronym-centric
design/architecture/methodology.</li>
<li><a href="http://codebetter.com">CodeBetter</a> - CodeBetter.Com
exists in order to help foster awareness of better practices, superior
tools, proven methodologies and techniques within the software
development community.</li>
<li><a href="https://goodenoughsoftware.net/">Greg Young</a> - Good
Enough Software is By Definition Good Enough.</li>
<li><a href="https://www.infoq.com/domaindrivendesign/">InfoQ Blog</a> -
Domain-Driven Design Content on InfoQ.</li>
<li><a href="https://dannorth.net/blog/">Dan North</a> - Inventor of
Behavior-Driven Design. Blogs and talks about Event Storming also.</li>
<li><a href="http://blog.sapiensworks.com">Mike Mogosanu</a> -
Maintainable code is a business advantage. Creator of Domain Map: The
Domain Modeling Tool - Easy And Powerful Domain Driven Design.</li>
<li><a href="http://blog.christianposta.com">Christian Posta</a> -
Principal Middleware Architect @ Red Hat, open-source enthusiast,
committer @ Apache, Cloud, Integration, Kubernetes, Docker, OpenShift,
Fabric8.</li>
<li><a href="http://enterprisecraftsmanship.com">Vladimir Khorikov</a> -
Pluralsight author. Blogs about software development principles and best
practices.</li>
<li><a href="http://techbeacon.com/">TechBeacon</a> - Articles on
TechBeacon tagged <em>domain driven design</em>.</li>
<li><a href="http://codeopinion.com">Derek Comartin</a> - Articles under
the category <em>Domain Driven Design</em>.</li>
<li><a href="https://ziobrando.blogspot.it">Alberto Brandolini</a> -
Inventor of Event Storming. Asserting that problems cannot be solved
with the same mindset that originated them, Alberto switches perspective
frequently assuming the architect, mentor, coach, manager or developer
point of view.</li>
<li><a href="http://thinkbeforecoding.com/">Jérémie Chassaing</a> -
Various articles about DDD/CQRS. Implemented Greg Young’s SimpleCQRS
sample in F#.</li>
<li><a href="https://vaughnvernon.co">Vaughn Vernon</a> - Vaughn Vernon
understands the unique demands of software development and the
challenges you face as you improve your craft in a fast-paced
industry.</li>
<li><a href="http://vladikk.com/">Vladik Khononov</a> - Various
DDD-related articles.</li>
<li><a href="https://blog.eventsourcing.com">Eventsourcing
Publications</a> - Practical event sourcing.</li>
<li><a href="http://www.jefclaes.be/">Jef Claes</a> - Excellent articles
and talks on Domain-Driven Design.</li>
<li><a href="http://udidahan.com/articles/">Udi Dahan</a> - From the
creator of NServiceBus.</li>
<li><a href="https://lostechies.com/chrispatterson/">Chris Patterson</a>
- From the creator of the MassTransit distributed application
framework.</li>
<li><a href="http://www.aaronstannard.com/">Aaron Stannard</a> - From
the CTO and co-founder of Petabridge, developers of the Akka.NET Actor
Model framework.</li>
<li><a href="https://rogeralsing.com/">Roger Johansson</a> - Mostly C#,
DDD, and Akka.NET.</li>
<li><a href="http://squirrel.pl/blog/">Konrad Garus</a> - Ranting and
Programming in Java, Clojure, and JavaScript. Articles tagged under
<em>cqrs</em>.</li>
<li><a href="http://blog.oasisdigital.com/category/cqrs/">Oasis
Digital</a> - Content by Oasis Digital tagged under <em>cqrs</em>.</li>
<li><a href="http://adaptechsolutions.net/blog/">Adaptech</a> - Adaptech
Solutions blog. Our founder, Adam Dymitruk, debated the merits of CQRS
with Greg Young before Greg coined the term. Adam and business partner
Robert Reppel are among the leading practitioners of event-sourced
microservices.</li>
<li><a href="http://gorodinski.com/">Lev Gorodinski</a> - Several
articles about DDD from 2013, which are still relevant.</li>
<li><a href="https://software2cents.wordpress.com/">Dino Esposito</a> -
Software architect, trainer, book author. Author of <a
href="https://www.amazon.com/Microsoft-NET-Architecting-Applications-Enterprise/dp/0735685355/">Microsoft
.NET - Architecting Applications for the Enterprise (2nd
Edition)</a>.</li>
<li><a
href="http://dearjunior.blogspot.se/search/label/domain%20driven%20design">Dan
Bergh Johnsson “Dear Junior”</a> - Domain-Driven Design mixed with
security, and agile in general. Written as fictional letters to a
younger programmer.</li>
<li><a
href="https://www.thenativeweb.io/blog/2017-10-25-09-46-ddd-and-co-part-1-whats-wrong-with-crud/">the
native web</a> - DDD &amp; Co. series</li>
<li><a href="https://blog.arkency.com/">Arkency</a> - Various DDD, CQRS,
Event Sourcing related articles from Ruby experts.</li>
<li><a href="http://svatasimara.cz/">Svaťa Šimara</a> - DDD series -
language, domain, modeling, infrastructure, implementation in PHP</li>
<li><a href="https://xhafan.com/blog/">Martin Havlišta</a> - DDD, CQRS,
TDD blog posts with code samples in C# .NET</li>
<li><a
href="https://khalilstemmler.com/articles/categories/domain-driven-design">Khalil
Stemmler</a> - DDD series introduction and talk about how to implement
DDD with TypeScript</li>
<li><a href="https://baasie.com/">Kenny Baas-Schwegler</a> - DDD, BDD,
Socio-technical, EventStorming and continuous delivery blogs.</li>
<li><a href="https://joaorosa.io">João Rosa</a> - Personal blog about
Domain-Driven Design, Visual Collaboration, leadership and
organisational design. And other things in between. Curator of <a
href="https://leanpub.com/visualcollaborationtools/">Visual
Collaboration Tools</a> and host of the <a
href="https://www.softwarecraftspodcast.com/">Software Crafts
Podcast</a></li>
<li><a href="https://gat.engineering">GlobalAppTesting engineering</a> -
GlobalAppTesting’s engineering blog with materials on practical DDD and
CQRS.</li>
</ul>
<h2 id="sample-projects">Sample Projects</h2>
<h3 id="go">GO</h3>
<ul>
<li><a href="https://github.com/JankariTech/bsDateServer">BDD in GO</a>
- Sample app demonstrating the use of Cucumber + GO for a BDD testing
approach. Blog post can be found <a
href="https://dev.to/jankaritech/demonstrating-bdd-behavior-driven-development-in-go-1eci">here</a>.</li>
<li><a href="https://github.com/marcusolsson/goddd">Citerus DDD Sample
App GO Port</a> - This is an attempt to port the <a
href="https://github.com/citerus/dddsample-core">DDD Sample App</a> to
idiomatic Go. It can be run in a dockerized mode for previewing the
application.</li>
<li><a
href="https://github.com/ThreeDotsLabs/wild-workouts-go-ddd-example">DDD
by Refactoring</a> - Complete serverless application to show how to
apply DDD, Clean Architecture, and CQRS by practical refactoring of a Go
project. A full blog series about it can be found at <a
href="https://threedots.tech/"
class="uri">https://threedots.tech/</a>.</li>
<li><a href="https://github.com/victorsteven/food-app-server">DDD Food
App</a> - Sample DDD application implementing the 4 layers (Domain,
Infrastructure, Application and Interface) and considering two domain
patterns. There’s a blog article written for it <a
href="https://dev.to/stevensunflash/using-domain-driven-design-ddd-in-golang-3ee5">here</a>.</li>
<li><a href="https://github.com/takashabe/go-ddd-sample">DDD Sample in
GO</a> - Just another sample application implementing the four layers of
DDD.</li>
<li><a href="https://github.com/friendsofgo/gopherapi">Evolutive CRUD
API</a> - API implementation with full CRUD using a SOLID, Hexagonal
Architecture. There is a series of blog post written for it at <a
href="https://blog.friendsofgo.tech/"
class="uri">https://blog.friendsofgo.tech/</a>.</li>
<li><a href="https://github.com/tomiok/patients-API">Simple Hexagonal
Architecture PoC API</a> - PoC for a patients API using the hexagonal
architecture pattern.</li>
<li><a href="https://github.com/joshpme/azure-go-ddd-boilerplate">Azure
DDD boilerplate</a> - A boilerplate project for DDD in Azure using a
custom handler and Cosmos DB for event sourcing</li>
</ul>
<h3 id="net-cf">.NET (C#/F#)</h3>
<ul>
<li><a href="https://github.com/asc-lab/better-code-with-ddd">Better
code with DDD building blocks</a> - solution presents usage of DDD
tactical patterns to achieve better readability and expressiveness of
the code. Applying DDD patterns together with ubiquitous language closes
the gap between language spoken by experts and the team and language
used in the code.</li>
<li><a href="https://github.com/dcomartin/DDD-CQRS-ES-Example">CQRS-DDD
Example</a> - Domain Driven Design, CQRS, &amp; Event Sourcing Example
using GetEventStore, CommonDomain, NServiceBus, Entity Framework, SQL
Server, SignalR.</li>
<li><a href="https://github.com/mastreeno/Merp">Companion Code for
Microsoft .NET Architecting Applications for the Enterprise</a> - An
event based Micro ERP.</li>
<li><a
href="https://github.com/jbogard/ContosoUniversityCore">ContosoUniversityCore</a>
- ContosoUniversity on ASP.NET Core with Full .NET Framework.</li>
<li><a
href="https://github.com/itlibrium/DDD-starter-dotnet">DDD-starter-dotnet</a>
- Sample implementation and comparison of various approaches to building
DDD applications. Useful as a baseline to quickly start a DDD .net
project.</li>
<li><a
href="https://github.com/eulerfx/DDDInventoryItemFSharp">DDDInventoryItemFSharp</a>
- An idiomatic F# implementation of Domain-Driven Design</li>
<li><a
href="https://github.com/andras-nemes/DDDSkeletonNet">DDDSkeletonNet</a>
(C#) - a .NET skeleton project to introduce the concepts of Domain
Driven Design and loosely coupled layers.</li>
<li><a href="https://github.com/asc-lab/dotnet-cqrs-intro">DotNet CQRS
Intro</a> - Examples of implementation CQRS with Event Sourcing -
evolutionary approach (no CQRS, separate models and commands with the
same model, separate models and commands with separate models, separate
storage engines, event sourcing).</li>
<li><a href="https://github.com/eisk">EISK</a> - .NET CLI and VS
Templates with simple use cases to build scalable applications on top of
.net core with architectural best practices (DDD, onion architecture
etc).</li>
<li><a href="https://github.com/xhafan/emailmaker">EmailMaker</a> -
Email marketing ASP.NET Core MVC and ASP.NET MVC demo app demonstrating
<a href="https://github.com/xhafan/coreddd">CoreDdd</a> usage</li>
<li><a href="https://github.com/EduardoPires/EquinoxProject">Equinox
Project</a> - Full ASP.NET Core 3.1 application with Clean Architecture,
DDD, CQRS and Event Sourcing concepts</li>
<li><a
href="https://github.com/dotnet-architecture/eShopOnWeb">eShopOnWeb</a>
- Full ASP.NET Core 3.1 reference application from Microsoft showing
monolithic deployment architecture</li>
<li><a
href="https://github.com/volak/eShopOnContainersDDD">eShopOnContainersDDD</a>
- eShop fullstack example featuring catalog, basket, checkout, and order
bounded contexts</li>
<li><a
href="https://gist.github.com/swlaschin/2ad8627d0400b2ab70e9f3da08902c9d">Example
of Domain-Driven Design in F#</a> - Example of Domain Driven Design for
the game of checkers. There are two files: a scratch file with a series
of designs, and a final version.</li>
<li><a href="https://github.com/oskardudycz/EventSourcing.NetCore">Event
Sourcing .NET</a> - samples and resources about Event Sourcing and CQRS
in .NET. Contains also a self-paced kit of how to built own Event
Store</li>
<li><a
href="https://github.com/OKTAYKIR/EventFlow.Example">EventFlow.Example</a>
- DDD, CQRS, and Event-Sourcing example and contains following
technology stack: <a
href="https://github.com/eventflow/EventFlow">EventFlow</a>, <a
href="https://eventstore.com">EventStore</a>, <a
href="https://www.rabbitmq.com">RabbitMQ</a>, <a
href="https://www.mongodb.com">MongoDB</a>, <a
href="https://www.postgresql.org">PostgreSQL</a>, <a
href="https://www.docker.com">Docker</a></li>
<li><a href="https://github.com/MarkNijhof/Fohjin">Fohjin</a> - Example
project that accompanies Mark Nijhof’s <a
href="https://leanpub.com/cqrs">CQRS</a> book.</li>
<li><a href="https://github.com/thinkbeforecoding/FsUno">FsUno</a> -
Event sourcing implementation sample in F#.</li>
<li><a href="https://github.com/VaughnVernon/IDDD_Samples_NET">IDDD
Samples in .NET</a> - These are the sample Bounded Contexts for C#.NET
from the book “Implementing Domain-Driven Design” by Vaughn Vernon.</li>
<li><a
href="https://github.com/ryletko/LexiQuest-Modular-DDD">LexiQuest-Modular-DDD</a>
- Modular application built with Clean Architecture and DDD principles
which is ready to quickly get splitted into microserves.</li>
<li><a href="https://github.com/mspnp/cqrs-journey">Microsoft Patterns
and Practices: CQRS Journey Sample Code</a> - Sample code from CQRS
Journey.</li>
<li><a
href="https://github.com/kgrzybek/modular-monolith-with-ddd">Modular
Monolith</a> - Full Modular Monolith .NET application with Domain-Driven
Design approach.</li>
<li><a
href="https://github.com/ryletko/Modular.StarterTemplate">Modular.StarterTemplate</a>
- Starter template for a modular application in Clean Architecture DDD
style with synchronous interaction between modules within single
transaction. Perfect for ERP applications.</li>
<li><a
href="https://github.com/cesarcastrocuba/nlayerappv3">NLayerAppV3</a>
(.Net Core Preview 2) - a N-Layered Architecture Sample Project.</li>
<li><a href="https://github.com/mr0zek/Photostock">Photostock CQRS-DDD
Example</a></li>
<li><a
href="https://github.com/AdaptiveConsulting/ReactiveTraderCloud">Reactive
Trader Cloud</a> - Reactive Trader Cloud by Adaptive Consulting.</li>
<li><a
href="https://github.com/kgrzybek/sample-dotnet-core-cqrs-api">Sample
.NET Core CQRS REST API</a> - .NET Core REST API CQRS implementation
with raw SQL and DDD using Clean Architecture.</li>
<li><a href="https://github.com/ToJans/Scritchy">Scritchy</a> - CQRS
without the Plumbing, <a
href="http://www.youtube.com/watch?v=5DKTFZD3hu8">video</a>.</li>
<li><a href="https://github.com/thinkbeforecoding/m-r">Simple CQRS in
F#</a> - Greg Young’s SimpleCQRS in F#.</li>
<li><a href="https://github.com/gregoryyoung/m-r">SimpleCQRS</a> - Greg
Young’s “Simplest Thing” CQRS with Event Sourcing project.</li>
<li><a href="https://github.com/hamed-shirbandi/TaskoMask">TaskoMask</a>
- Task management system based on .NET Core with DDD, CQRS and Event
Sourcing Concepts.</li>
<li><a
href="https://github.com/volak/TodoMVC-DDD-CQRS-EventSourcing">TodoMVC-DDD-CQRS-EventSourcing</a>
- Implementation of basic Todo app via tastejs/todomvc in C#/Typescript
with eventsourcing, cqrs, and domain driven design</li>
</ul>
<h3 id="haskell">Haskell</h3>
<ul>
<li><a href="https://github.com/Eventuria/gsd">Eventuria gsd</a> -
Haskell todo list reactive application with DDD, CQRS and Event
Sourcing, FRP.</li>
</ul>
<h3 id="idris">Idris</h3>
<ul>
<li><a href="http://github.com/andorp/order-taking">OrderTaking</a> -
Dependently typed implementation of the Domain Modeling Made Functional
book. An example project how to formalize Bounded Context and Workflow
diagram with dependent types. A NodeJS deployable demo.</li>
</ul>
<h3 id="javascript-typescript">JavaScript / TypeScript</h3>
<ul>
<li><a
href="https://docs.wolkenkit.io/latest/media/sample-applications/wolkenkit-boards/">wolkenkit
Sample Applications</a> - A collection of DDD sample applications, such
as TodoMVC, a geocaching app, collaborative boards etc.</li>
<li><a
href="https://github.com/boostercloud/booster/tree/master/docs/examples">Booster
framework examples</a> Example applications built with Booster
Framework.</li>
<li><a
href="https://github.com/bitloops/ddd-hexagonal-cqrs-es-eda">Over-engineered
ToDo app</a> - Complete working example of using Domain Driven Design
(DDD), Hexagonal Architecture, CQRS, Event Sourcing (ES), Event Driven
Architecture (EDA), Behaviour Driven Development (BDD) using TypeScript
and NestJS generated using the <a
href="https://github.com/bitloops/bitloops-language">Bitloops Language
(BL)</a>.</li>
</ul>
<h3 id="jvm-languages">JVM languages</h3>
<ul>
<li><a href="https://github.com/mdonkers/akka-cqrs-es-demo">Akka CQRS ES
Demo</a> - Demo project to implement the CQRS and Event Sourcing
patterns in Scala-Akka.</li>
<li><a href="https://github.com/ddd-by-examples/library">DDD By Examples
- Library</a> - sample project of a library driven by real business
requirements. Modular monolith implemented with the help od DDD, BDD,
EventStorming, Example Mapping, CQRS, and more.</li>
<li><a href="https://github.com/BottegaIT/ddd-leaven-v2">DDD Leaven</a>
- DDD-CQRS sample v2.0 project that helps you with starting out advanced
domain modeling using Spring, JPA and testing.</li>
<li><a href="https://github.com/mkopylec/project-manager">DDD Workshop -
Project Manager</a> - “Do It Yourself” DDD workshop and a sample DDD
application at the same time. Based on a project managing domain.</li>
<li><a
href="https://github.com/Pragmatists/eventsourcing-java-example">Event
Sourcing Example</a> - A simplified (in memory) example of Event
Sourcing and CQRS implementation for Java code (modeled for banking
domain use cases).</li>
<li><a
href="https://github.com/andreschaffer/event-sourcing-cqrs-examples">Event
Sourcing and CQRS Examples</a> - A pragmatic application of Event
Sourcing and CQRS in Java with good references for common related
problems, e.g. event ordering and idempotency.</li>
<li><a href="https://github.com/pilloPl/event-source-cqrs-sample">Event
Sourcing and CQRS Sample</a> - Sample event sourced application with
Command Query Responsibility Segregation</li>
<li><a href="https://github.com/VaughnVernon/IDDD_Samples">IDDD
Samples</a> - These are the sample Bounded Contexts from the book
“Implementing Domain-Driven Design” by Vaughn Vernon.</li>
<li><a href="https://github.com/asc-lab/java-cqrs-intro">Java CQRS
Intro</a> - Examples of implementation CQRS with Event Sourcing -
evolutionary approach (no CQRS, separate models and commands with the
same model, separate models and commands with separate models, separate
storage engines, event sourcing).</li>
<li><a
href="https://github.com/fabriciorissetto/kotlin-ddd-sample">Kotlin DDD
Sample</a> - Sample DDD/CQRS project written in Kotlin.</li>
<li><a
href="https://github.com/humank/EventStormingWorkShop/">EventStormingWorkshop
- Designing Cloud Native Microservices On AWS</a> - A concrete sample to
go through EventStorming workshop and implement DDD tactical design
pattern in Java, apply AWS cloud native services to build up business
Event based Coffeeshop scenario.</li>
<li><a href="https://github.com/citerus/dddsample-core">DDDSample</a> -
Sample DDD project using Spring Boot (originally hosted in
http://dddsample.sourceforge.net/)</li>
<li><a href="https://eclipse-ee4j.github.io/cargotracker/">Eclipse
CargoTracker</a> - This project demonstrates how you can develop
applications with the Jakarta EE platform using widely adopted
architectural best practices like Domain-Driven Design (DDD). <a
href="https://github.com/eclipse-ee4j/cargotracker/">The code</a> is
intended to mirror a non-trivial application that developers in the real
work would work on. It attempts to demonstrate first-hand how you can
use Jakarta EE to effectively meet practical enterprise concerns such as
productivity, agility, testability, flexibility, maintainability,
scalability and security. The project is directly based on the well
known original <a href="https://github.com/citerus/dddsample-core">Java
DDD sample application</a> developed by DDD pioneer Eric Evans’ company
Domain Language and the Swedish software consulting company
Citerus.</li>
<li><a
href="https://github.com/felipexw/clean-arch-ddd-intro">https://github.com/felipexw/clean-arch-ddd-intro</a>
- Simple DDD + Clean Architecture using Micronaut.</li>
</ul>
<h3 id="php">PHP</h3>
<ul>
<li><a href="https://github.com/ferrius/ddd-cqrs-example">DDD CQRS Todo
Sample</a> - DDD CQRS ADR hexagonal architecture implementation built
with PHP 7 and Symfony 5.</li>
<li><a href="https://github.com/janikredpandadev/ddd-modulith">DDD
Modulith</a> - A DDD Onion Architecture implementation with Symfony 7 as
modulith.</li>
<li><a href="https://github.com/franzose/symfony-ddd-wishlist">DDD Wish
List</a> - A sample application in PHP built with Symfony 3 and
Vue.js.</li>
<li><a href="https://github.com/jorge07/ddd-playground/">DDD
Playground</a> - Sample implementation in PHP.</li>
<li><a href="https://github.com/codeliner/php-ddd-cargo-sample">Eric
Evans DDD Cargo Sample</a> - PHP 7 Version of the cargo sample used in
Eric Evans DDD book</li>
<li><a href="https://github.com/simara-svatopluk/cart">Shop Cart in
PHP</a> - Sample project that demonstrates how simple shop cart can look
like. Domain objects,Doctrine integration.,TDD,layers,unit testing</li>
<li><a
href="https://github.com/jorge07/symfony-5-es-cqrs-boilerplate">Symfony
5 DDD ES CQRS backend</a> - DDD, CQRS and Event Sourcing app using
Symfony and PHP 8.</li>
</ul>
<h2 id="libraries-and-frameworks">Libraries and Frameworks</h2>
<h3 id="go-1">GO</h3>
<ul>
<li><a href="https://github.com/onsi/ginkgo">Ginkgo</a> - Ginkgo builds
on Go’s testing package, allowing expressive Behavior-Driven Development
(“BDD”) style tests.</li>
<li><a href="https://github.com/go-bdd/gobdd">GOBDD</a> - Small BDD
framework for GO.</li>
<li><a href="https://github.com/smartystreets/goconvey">GoConvey</a> -
Go testing in the browser. Integrates with <code>go test</code>. Write
behavioral tests in Go.</li>
<li><a href="https://github.com/cucumber/godog">Godog</a> - Package
godog is the official Cucumber BDD framework for Golang, it merges
specification and test documentation into one cohesive whole, using
Gherkin formatted scenarios in the format of Given, When, Then.</li>
</ul>
<h3 id="net">.NET</h3>
<ul>
<li><a href="https://github.com/volak/Aggregates.NET">Aggregates.NET</a>
- .NET event sourced domain driven design model via NServicebus and
GetEventStore.</li>
<li><a
href="https://github.com/yreynhout/aggregateSource">AggregateSource</a>
- Lightweight infrastructure for doing eventsourcing using
aggregates.</li>
<li><a href="http://getakka.net/">Akka.NET</a> - Akka.NET is a toolkit
and runtime for building highly concurrent, distributed, and fault
tolerant event-driven applications on .NET &amp; Mono.</li>
<li><a href="https://abp.io">ABP</a> - Successor of ASP.NET Boilerplate
- ASP.NET Core based application framework to create NLayered, Domain
Driven Designed web applications with a microservice focused modular
architecture</li>
<li><a href="http://aspnetboilerplate.com/">ASP.NET Boilerplate</a> -
ASP.NET MVC, Web API and ASP.NET Core based application framework to
create NLayered, Domain Driven Designed web Applications implementing
best practices.</li>
<li><a href="https://github.com/sm-g/ByValue">ByValue</a> - This library
helps to create ValueObjects (even with collection properties) with
properly implemented equality behavior.</li>
<li><a
href="https://github.com/damianh/Cedar.CommandHandling">Cedar.CommandHandling</a>
- Middleware to handling commands over HTTP; typically used in CQRS
applications.</li>
<li><a href="https://github.com/d60/Cirqus">Cirqus</a> - d60 event
sourcing + CQRS framework.</li>
<li><a
href="https://github.com/hlaueriksson/CommandQuery">CommandQuery</a> -
Command Query Separation for 🌐ASP.NET Core ⚡AWS Lambda ⚡Azure
Functions ⚡Google Cloud Functions 🌐ASP.NET Web API 2</li>
<li><a href="https://github.com/xhafan/coreddd">CoreDdd</a> - Set of
open-source .NET libraries helping with DDD and CQRS, with NHibernate
persistence</li>
<li><a href="https://github.com/MerrionComputing/CQRSAzure">CQRS on
Azure</a> CQRS on Windows Azure.</li>
<li><a href="https://dolittle.com">Dolittle</a> - Build better
applications with Dolittle. An Event Sourced, Microservice platform
oriented around DDD with developer productivity and simplicity front and
center.</li>
<li><a href="https://www.cqrs.nu/">Edument CQRS and Intentful BDD
Testing Starter Kit</a> - Library and tutorial for how to build CQRS/ES
applications, including a BDD style testing framework.</li>
<li><a href="https://github.com/eventflow/EventFlow">EventFlow</a> -
Async/await first CQRS+ES and DDD framework for .NET
http://geteventflow.net/.</li>
<li><a
href="https://github.com/younos1986/Core.EventStore">Core.EventStore</a>
- A library to facilitate communication between CommandService and
QueryService. The Idea is when any event occures in commandService, it
should be persisted in QueryService in MongoDb.</li>
<li><a href="https://github.com/jonsequitur/Its.Cqrs">Its.Cqrs</a> - A
set of libraries for CQRS and Event Sourcing, with a Domain-Driven
Design flavor.</li>
<li><a href="https://github.com/JasperFx/marten">Marten</a> - Postgresql
as a Document Database and Event Store for .Net Applications.</li>
<li><a href="https://github.com/MassTransit/MassTransit">MassTransit</a>
- Distributed Application Framework for .NET.</li>
<li><a href="https://github.com/jbogard/MediatR">MediatR</a> - Supports
request/response, commands, queries, notifications and events,
synchronous and async with intelligent dispatching via C# generic
variance.</li>
<li><a
href="https://github.com/QuickenLoans/MessageRouter">MessageRouter</a> -
Described in this video: <a href="https://vimeo.com/171178586">The
Beating Heart of CQRS, or Actor-Based Message Routing on the CLR</a> by
Paulmichael Blasucci at the New York F# .NET User Group.</li>
<li><a href="https://github.com/netdevpack">NetDevPack</a> - A smart set
of common classes and implementations to improve your development
productivity using .NET (DDD, CQRS, Specification Pattern, MediatR,
Validations, Notifications).</li>
<li><a href="https://github.com/NEventStore/NEventStore">NEventStore</a>
- A persistence library used to abstract different storage
implementations when using event sourcing as storage mechanism.</li>
<li><a href="https://github.com/Particular/NServiceBus">NServiceBus</a>
- Service bus for .NET.</li>
<li><a href="https://github.com/yreynhout/Projac">Projac</a> - Projac is
a set of projection libraries that allow you to write projections
targetting various backing stores.</li>
<li><a href="https://github.com/ElderJames/shriek-fx">shriek-fx</a> - An
simple,elegant and useful Domain-Driven Design and CQRS framework
developed using .NET Core 2.0.</li>
<li><a
href="https://github.com/damianh/SqlStreamStore">SqlStreamStore</a> -
.NET Stream Store library targeting SQL based implementations.</li>
<li><a href="https://github.com/yevhen/Streamstone">Streamstone</a> -
Event Store for Azure Table Storage.</li>
<li><a
href="https://github.com/mission202/Stringly.Typed">Stringly.Typed</a> -
Making it easier to convert strings to/from .NET types.</li>
<li><a href="https://github.com/jeyjeyemem/Xer.Cqrs">Xer.Cqrs</a> - A
simple library for creating applications based on the CQRS pattern with
support for attribute routing and hosted handlers. Developed in C#
targeting .NET Standard 1.0.</li>
<li><a href="https://github.com/deveel/deveel.repository">Deveel
Repository</a> - A simple implementation of the Repository pattern for
.NET, supporting MongoDB and Entity Framework, extending the model with
further utilities (caching, paging, validation, etc.).</li>
</ul>
<h3 id="databases">Databases</h3>
<ul>
<li><a href="https://geteventstore.com">Event Store</a> - The
open-source, functional database with Complex Event Processing in
JavaScript.</li>
<li><a href="https://eventsourcing.com">Eventsourcing</a> - Business
event capture and querying framework.</li>
<li><a href="https://github.com/message-db/message-db">Message DB</a> -
Microservice Native Event Store and Message Store for Postgres. A
fully-featured event store and message store implemented in PostgreSQL
for Pub/Sub, Event Sourcing, Messaging, and Evented Microservices
applications.</li>
<li><a href="https://serialized.io">Serialized</a> - Complete platform
for Event Sourcing &amp; CQRS.</li>
</ul>
<h3 id="elixir">Elixir</h3>
<ul>
<li><a href="https://github.com/slashdotdash/commanded">Commanded</a> -
Command handling middleware for CQRS/ES applications, Pure Functional
Data Structures for Aggregates and Process Managers, Point-to-Point
message routing, and much more in Elixir (Erlang VM) - All in Actor
concurrency model.</li>
<li><a href="https://github.com/otobus/event_bus">Event Bus</a> -
Traceable, extendable and minimalist event bus implementation for Elixir
with built-in event store and event watcher based on ETS.</li>
<li><a href="https://github.com/slashdotdash/eventstore">eventstore</a>
- CQRS event store using PostgreSQL for persistence.</li>
</ul>
<h3 id="javascript-typescript-1">JavaScript / TypeScript</h3>
<ul>
<li><a href="http://cqrs.js.org">cqrs.js</a> - CQRS implementations in
node.js. Includes <a
href="https://github.com/adrai/node-eventstore">node-eventstore</a>, <a
href="https://github.com/adrai/node-cqrs-domain">node-cqrs-domain</a>,
<a
href="https://github.com/adrai/node-cqrs-eventdenormalizer">node-eventdenormalizer</a>,
<a
href="https://github.com/adrai/node-cqrs-saga">node-cqrs-saga</a>.</li>
<li><a href="https://www.wolkenkit.io/">wolkenkit</a> - A CQRS, DDD, and
event-sourcing framework for JavaScript and Node.js.</li>
<li><a href="https://github.com/bitloops/bitloops-language">Bitloops
Language (BL)</a> - Open-source, 4th-generation, transpiled programming
language that helps you write clean code, well-designed systems, and
build high-quality software that is testable, auditable and maintainable
using DDD and Hexagonal Architecture.</li>
<li><a href="https://www.booster.cloud/">Booster</a> - A CQRS, DDD and
event-sourcing open-source framework that leverages all the
infrastructure and uses high-level abstractions and conventions. It help
users build advanved even-driven applications letting them focus on
business logic exclusively.<br />
</li>
<li><a href="https://github.com/talyssonoc/node-api-boilerplate">Node
API Boilerplate</a> - NodeJS web API boilerplate for DDD and Clean
Architecture applications.</li>
</ul>
<h3 id="jvm">JVM</h3>
<ul>
<li><a href="https://github.com/pawelkaczor/akka-ddd">akka-ddd</a> -
Reusable artifacts for building applications on top of the Akka platform
following CQRS/DDDD-based approach.</li>
<li><a href="https://isis.apache.org/index.html">Apache Isis</a> -
Apache Isis is a framework for rapidly developing domain-driven apps in
Java.</li>
<li><a href="http://www.axonframework.org/">Axon Framework</a> - The
axon framework is focused on making life easier for developers that want
to create a java application based on the CQRS principles.</li>
<li><a href="https://github.com/funkygao/cp-ddd-framework">DDDplus
framework</a> - A lightweight flexible development framework for complex
business architecture based on DDD.</li>
<li><a href="https://github.com/yreynhout/JESA">JESA</a> - Event sourced
aggregates for Java.</li>
<li><a href="https://www.lagomframework.com">Lagom</a> - The Lagom
Framework is a microservices framework for the Java Virtual Machine,
with APIs for the Java and Scala languages. It includes an Event
Sourcing/CQRS based persistence module.</li>
<li><a href="http://seedstack.org/docs/business/">SeedStack’s Business
Framework</a> - A set of building blocks that enable you to code
business logic according to the Domain-Driven Design (DDD)
approach.</li>
<li><a href="https://spine.io/">Spine Event Engine</a> - a CQRS/ES
framework for building cloud applications. Defines Bounded Contexts with
their Commands, Events, and Entity states in Protobuf. The backend logic
is written in Java, on top of the Proto-generated code. Client code in
Java, JS or Dart communicates with the backend via gRPC.</li>
<li><a href="https://github.com/Ahoo-Wang/Wow">Ahoo-Wang/Wow</a> - A
Modern Reactive CQRS Architecture Microservice development framework
based on DDD and EventSourcing.</li>
</ul>
<h3 id="php-1">PHP</h3>
<ul>
<li><a href="https://github.com/broadway/broadway">Broadway</a> -
Broadway is a (PHP) project providing infrastructure and testing helpers
for creating CQRS and event sourced applications.</li>
<li><a href="https://github.com/codefyphp/">CodefyPHP Framework</a> - A
PHP framework for codefying and building complex applications using
Domain-Driven Design, CQRS, and Event Sourcing.</li>
<li><a href="http://ecotone.tech">Ecotone</a> - Enables message driven
architecture in PHP and provides building blocks to follow DDD and CQRS
principles.</li>
<li><a href="https://github.com/javanile/php-glossary">PHP Glossary</a>
- Apply a Term Analysis to extract domain terms vs out-of-scope terms in
a DDD manner.</li>
</ul>
<h3 id="python">Python</h3>
<ul>
<li><a href="https://github.com/johnbywater/eventsourcing">Eventsoucing
in Python</a> - Mature, stable Python library for event sourcing and
DDD. Supports wide variety of databases, different kinds of orderings of
domain events, application level encryption, snapshotting, optimistic
concurrency control, and process events. Applications, and entire
systems of applications, can be defined independently of infrastructure,
and run in different ways (single threaded, multi-threaded, clocked,
stepping, multi-process, actor model) and with different
infrastructure.</li>
<li><a href="https://github.com/dry-python">dry-python</a> - A set of
libraries for pluggable business logic components.</li>
<li><a
href="https://github.com/knucklesuganda/py_assimilator/">PyAssimilator</a>
- Quickly create DDD Python patterns, Event-Based Systems, CRUD
applications. Set of Python patterns for database access that support
SQLAlchemy, MongoDB, Redis, or Pure Python. PyAssimilator allows you to
write code without dependencies, meaning you can switch SQL to NoSQL
without changing a single file in your system.</li>
</ul>
<h3 id="ruby">Ruby</h3>
<ul>
<li><a href="https://eventide-project.org">Eventide</a> - Event Sourcing
and Microservices Stack for Ruby. A set of libraries for writing event
driven, autonomous services.</li>
<li><a href="https://railseventstore.org">Rails Event Store</a> - Rails
Event Store (RES) is a library for publishing, consuming, storing and
retrieving events. It’s your best companion for going with an
event-driven architecture for your Rails application.</li>
</ul>
<h2 id="podcasts-and-interviews">Podcasts and Interviews</h2>
<ul>
<li><a href="http://dotnetrocks.com/?show=1151">Deeper into DDD on
DotNetRocks with David Real</a> - 11 June 2015.</li>
<li><a href="http://dotnetrocks.com/?show=1023">Thinking in DDD on
DotNetRocks with Julie Lerman and Steve Smith</a> - 19 August 2014.</li>
<li><a href="http://dotnetrocks.com/?show=236">Eric Evans on Domain
Driven Design on DotNetRocks</a> - 10 May 2007.</li>
<li><a href="http://dotnetrocks.com/?show=191">Jimmy Nilsson on Domain
Driven Design on DotNetRocks</a> - 29 August 2006.</li>
<li><a href="http://www.beingtheworst.com">Being the Worst</a> - 2012
thru 2016.</li>
<li><a
href="http://www.se-radio.net/2015/05/se-radio-episode-226-eric-evans-on-domain-driven-design-at-10-years/">Software
Engineering Radio Episode 225: Eric Evans on Domain-Driven Design at 10
Years</a> - 13 May 2015.</li>
<li><a
href="http://www.se-radio.net/2015/01/episode-218-udi-dahan-on-cqrs-command-query-responsibility-segregation/">Software
Engineering Radio Episode 218: Udi Dahan on CQRS (Command Query
Responsibility Segregation)</a> - 30 January 2015.</li>
</ul>
<h2 id="conferences">Conferences</h2>
<ul>
<li><a href="https://dddeurope.com">Domain-Driven Design Europe</a> -
The Leading DDD conference (online during COVID19)</li>
<li><a
href="https://dddeurope.com/2020/#eventsourcing">EventSourcing</a> - A
new event for the CQRS/EventSourcing community</li>
<li><a href="https://dddeurope.com/2020/#foundations">DDD
Foundations</a> - A curated conference for DDD newcomers</li>
<li><a href="http://exploreddd.com/">Explore DDD - USA</a></li>
<li><a href="http://kandddinsky.com/">Kandddinsky - Germany</a></li>
</ul>
<h2 id="user-groups">User Groups</h2>
<ul>
<li><a href="https://sessionize.com/ddd-meetups">Collective CFP</a> -
Submit your talks to all the DDD user groups at once.</li>
<li><a href="https://datawrapper.dwcdn.net/9FNZI/">Map of user groups in
Europe</a></li>
<li><a href="https://datawrapper.dwcdn.net/nbZkd/">Map of user groups in
North America</a></li>
<li><a href="https://datawrapper.dwcdn.net/oin66/">Map of user groups in
Asia</a></li>
<li><a href="https://datawrapper.dwcdn.net/yaEOa/">Map of user groups in
Africa</a></li>
<li><a href="https://virtualddd.com/">Virtual</a></li>
<li><a
href="https://www.meetup.com/worldwide-eventstorming-meetup/">Worldwide</a>
- Specific about EventStorming</li>
<li><a href="https://www.meetup.com/ddd-vienna/">Austria</a></li>
<li><a href="https://www.meetup.com/dddbcn/">Barcelona</a></li>
<li><a href="https://dddbelfast.com/">Belfast</a></li>
<li><a href="http://www.meetup.com/dddbelgium/">Belgium</a></li>
<li><a
href="http://www.meetup.com/Domain-Driven-Design-Berlin/">Berlin</a></li>
<li><a
href="https://www.meetup.com/Domain-Driven-Design-Koln-Bonn/">Cologne/Bonn</a></li>
<li><a
href="https://www.meetup.com/copenhagen-domain-driven-design-meetup/">Copenhagen</a></li>
<li><a href="http://www.meetup.com/ddd-krk/">Cracow</a></li>
<li><a href="https://www.facebook.com/groups/dddtaiwan/">DDD Taiwan
Community</a></li>
<li><a href="https://www.meetup.com/ddd-denver/">Denver</a></li>
<li><a href="https://t.me/ddd_iran/">Iran</a></li>
<li><a href="https://www.meetup.com/dddgreece/">Greece</a></li>
<li><a
href="https://www.meetup.com/DDD-HH-Domain-driven-Design-Hamburg/">Hamburg</a></li>
<li><a href="http://www.meetup.com/dddlondon/">London</a></li>
<li><a
href="https://www.meetup.com/Microservices-Meetup-Munich/">Munich</a></li>
<li><a
href="http://www.meetup.com/Domain-Driven-Design-Nederland/">Nederland</a></li>
<li><a href="https://www.meetup.com/dddnorway/">Norway</a></li>
<li><a href="https://www.meetup.com/DDD-Phoenix">Phoenix</a></li>
<li><a href="https://www.meetup.com/DDD-WAW">Warsaw</a></li>
<li><a href="http://www.meetup.com/DDD-WRO">Wroclaw</a></li>
<li><a href="https://t.me/dddevotion">Russia</a></li>
</ul>
<h2 id="tools">Tools</h2>
<ul>
<li><a href="http://www.domainstorytelling.org/">Domain Storytelling</a>
- a knowledge-crunching technique that helps the people involved to
familiarize themselves with the domain and work out a model that
expresses their shared understanding. Available as a <a
href="http://www.domainstorytelling.org/images/DST_Whiteboard-Kit.pdf">print-out
template</a>, as well as open-source online tool, <a
href="https://www.wps.de/modeler">WPS Modeler</a> (<a
href="https://github.com/wps/domain-story-modeler">source</a>).</li>
</ul>
<h2 id="license">License</h2>
<p><a href="https://creativecommons.org/publicdomain/zero/1.0/"><img
src="http://mirrors.creativecommons.org/presskit/buttons/88x31/svg/cc-zero.svg"
alt="CC0" /></a></p>
<p>To the extent possible under law, <a
href="https://buildplease.com">Nick Chamberlain</a> has waived all
copyright and related or neighboring rights to this work.</p>
<p><a href="https://github.com/wkjagt/awesome-ddd">ddd.md Github</a></p>
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