CQRS: Links, News And Resources (6)

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Lokad.CQRS Event Store is Slow – Journal – CQRS and Cloud Computing

http://abdullin.com/journal/2013/1/21/lokadcqrs-event-store-is-slow.html

CQRS: Command/Query Responsibility Segregation

CQRS: Command/Query Responsibility Segregation from Brian Ritchie

Basic tutorial on Event Sourcing and CQRS « Code Snippets

http://mriet.wordpress.com/2012/09/22/basic-tutorial-on-event-sourcing-and-cqrs/

CQRS Architecture and Definitions – Journal – CQRS and Cloud Computing

http://abdullin.com/journal/2010/11/3/cqrs-architecture-and-definitions.html

CQRS Info

http://www.cqrsinfo.com/

CQRS-FAQ – home

http://cqrs-faq.wikispaces.com/

Using commands · sharparchitecture/Sharp-Architecture-Cookbook Wiki

https://github.com/sharparchitecture/Sharp-Architecture-Cookbook/wiki/Using-commands

gregoryyoung/m-r · GitHub

https://github.com/gregoryyoung/m-r

CQRS Example

ToJans/mauritius · GitHub

https://github.com/ToJans/mauritius

CQRS Example

mem-memov/blackboard · GitHub

https://github.com/mem-memov/blackboard/

Online blackboard

Doodle: VAN: CQRS Journey

http://www.doodle.com/b6keemn8xw93qrff

CQRS Journey

http://msdn.microsoft.com/en-us/library/jj554200.aspx

Event Store – An awesome, rock-solid, super-fast persistence engine for event-sourced applications

http://geteventstore.com/

DDD\CQRS Sample

http://cqrssample.codeplex.com/

Aggregate Root holding reference to another Aggregate, how do i set up the dependencies ? – Google Groups

https://groups.google.com/forum/#!topic/dddcqrs/TQBTn-tIj-w/discussion

My Links

http://delicious.com/ajlopez/cqrs

Keep tuned!

Angel “Java” Lopez

http://www.ajlopez.com


http://twitter.com/ajlopez

CQRS: Links, News And Resources (5)

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04×02 [Screencast] CQRS con Andrea Magnorsky (aka roundcrisis)

http://www.32minutos.net/?p=29

CQRS Around the World

http://cqrsguide.com/world

CQRS Pocket Guide

http://cqrsguide.com/

CQRS Case Studies

http://cqrsguide.com/case-studies

Sample code for IDDD Book by Vaughn Vernon

http://lokad.github.com/lokad-iddd-sample/

CQRS Mind Map

http://www.mindmeister.com/de/177815383/cqrs

UI Composition Techniques for Correct Service Boundires

http://www.udidahan.com/2012/06/23/ui-composition-techniques-for-correct-service-boundaries/

How we got rid of the database–part 4

http://lostechies.com/gabrielschenker/2012/06/20/how-we-got-rid-of-the-databasepart-4/

This is the fourth episode of a series of posts about how we do CQRS and event sourcing

cqrs-sample

http://code.google.com/p/cqrs-sample/

Sample CQRS implementation in Java

CQRS in DDD Community

http://dddcommunity.org/cqrs

OrmHate

http://martinfowler.com/bliki/OrmHate.html

Announcing V1 Pseudo-Production Release

http://cqrsjourney.github.com/blog/2012/05/08/Announcing-V1-Pseudo-Production-Release/

As part of our CQRS Journey we plan to have several pseudo-production releases of the Contoso Conference Management System so that we can explore the real-world issues of data-versioning and software updates in an application that implements the CQRS pattern in several bounded contexts.

debasishg / cqrs-akka

https://github.com/debasishg/cqrs-akka

An implementation of CQRS using scalaz for functional domain models and Akka for event sourcing

CQRS with Akka actors and functional domain models

http://debasishg.blogspot.com.ar/2011/01/cqrs-with-akka-actors-and-functional.html

Sagas

http://www.cs.cornell.edu/andru/cs711/2002fa/reading/sagas.pdf

Project “a CQRS Journey”

http://cqrsjourney.github.com/

There will be two, closely related, deliverables from this project: the source code for a complete, working reference implementation (an end-to-end sample app) that illustrates the key concepts, patterns, and approaches related to CQRS & ES, and a written guide to accompany the code, provide explanations, context, and references to other relevant material.

mspnp / cqrs-journey-code

https://github.com/mspnp/cqrs-journey-code

Microsoft patterns & pratices CQRS Journey sample application
Microsoft’s CQRS Journey project to take community contributions

http://blogs.msdn.com/b/agile/archive/2012/02/24/microsoft-s-cqrs-journey-project-to-take-community-contributions.aspx

Focus for next iterations in Lokad.CQRS Sample Project

http://abdullin.com/journal/2012/2/15/focus-for-next-iterations-in-lokadcqrs-sample-project.html

My Links

http://delicious.com/ajlopez/cqrs

CQRS: Links, News And Resources (4)

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Let’s Scale Out CQRS Sample Project

http://abdullin.com/journal/2012/2/16/lets-scale-out-cqrs-sample-project.html

CQRS Videos

http://cqrs.wordpress.com/video/

SzymonPobiega / DDDSample.Net

https://github.com/SzymonPobiega/DDDSample.Net

A .NET implementation of Domain Driven Design (DDD) sample application based on Eric Evans’ examples included in his great book. Project is intended to be used in training, demonstration and experiments.

Bringing an MVC perspective to CQRS.

http://codefish21056.blogspot.com.ar/2010/08/cqrs-mvc.html

This article makes the point that the MVC and CQRS patterns are very similar. My hope is that with this “new” understating new development tools bringing the two patterns together can be developed to facilitate our programmers lives.

KABA-CCEAC / nodeEventStore

https://github.com/KABA-CCEAC/nodeEventStore

EventStore Implementation in node.js

Why Event Sourcing?

http://abdullin.com/journal/2011/9/27/why-event-sourcing.html

Event Sourcing is a concept that becomes increasingly popular day by day. Even ThoughtWorks has brought it into it’s latest Technology Radar. Let’s do a quick overview of ES one more time.

Why use Event Sourcing?

http://codebetter.com/gregyoung/2010/02/20/why-use-event-sourcing/

Autofac decorators look like a perfect fit for CQRS commands

https://groups.google.com/forum/#!topic/dddcqrs/JQtV_X8R0ro/discussion

Thinking Asynchronous – Domain Modeling using Akka Transactors – Part 1

http://debasishg.blogspot.com.ar/2010/03/thinking-asynchronous-domain-modeling.html

Thoughts on Event Streams in Elastic Environments

http://abdullin.com/journal/2011/12/3/thoughts-on-event-streams-in-elastic-environments.html

CQRS: Sagas with Event Sourcing (Part II of II)

http://blog.jonathanoliver.com/2010/09/cqrs-sagas-with-event-sourcing-part-ii-of-ii/

Sagas

http://www.amundsen.com/downloads/sagas.pdf

CQRS Command Testing With PHPSpec

http://blog.andho.com/2011-11-24/cqrs-command-testing-with-phpspec/

Towards an immutable domain model – introduction (part 1)

http://blog.zilverline.com/2011/02/01/towards-an-immutable-domain-model-introduction-part-1/

ToJans / MinimalisticCQRS

https://github.com/ToJans/MinimalisticCQRS

CQRS for the lazy *ss

Aclarando CQRS (traducción)

https://docs.google.com/document/d/1-5rmzY48aXZp3A-uaULnwU0gV7r1E1ZkEV1i5YBn-LI/edit?pli=1

p&p roadmap for the next few months

http://blogs.msdn.com/b/eugeniop/archive/2011/11/01/p-amp-p-roadmap-for-the-next-few-months.aspx

CQRS without the plumbing – Example app

http://scritchyexample.apphb.com/

ToJans / Scritchy

https://github.com/ToJans/Scritchy

CQRS without plumbing

Scritchy BankAccount part 1 – CQRS without the plumbing

Episode 9: When To Avoid CQRS—Clarified

http://distributedpodcast.com/2011/episode-9-when-to-avoid-cqrsclarified

gregoryyoung / m-r

https://github.com/gregoryyoung/m-r/

Simple CQRS example

CQRS Documents by Greg Young

http://cqrs.files.wordpress.com/2010/11/cqrs_documents.pdf

CQRS is too complicated

http://codeofrob.com/entries/cqrs-is-too-complicated.html

Command-Query Separation on Windows Azure

http://blog.ntotten.com/2011/10/24/command-query-separation-on-windows-azure/

Using and Abusing the CQRS EventStore

Thoughts around REST, DDD, and CQRS: Models, Queries, and Commands

https://groups.google.com/forum/?fromgroups#!topic/the-design-of-distributed-applications/8ilexg74fHc

My Links

http://delicious.com/ajlopez/cqrs

Keep tuned!

Angel “Java” Lopez

http://www.ajlopez.com


http://twitter.com/ajlopez

CQRS: Links, News And Resources (3)

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The third installment of this link series. This time, tutorial resources.

CQRS Starting Page

http://abdullin.com/cqrs/

This page lists learning materials, documents, videos, tips and reference implementations about getting started with Command and Query Responsibility Segregation.

Clarified CQRS

http://www.udidahan.com/2009/12/09/clarified-cqrs/

Towards an immutable domain model – introduction (part 1)

http://blog.zilverline.com/2011/02/01/towards-an-immutable-domain-model-introduction-part-1/

Aclarando CQRS (traducción)

https://docs.google.com/document/d/1-5rmzY48aXZp3A-uaULnwU0gV7r1E1ZkEV1i5YBn-LI/edit?pli=1

CQRS Documents by Greg Young

http://cqrs.files.wordpress.com/2010/11/cqrs_documents.pdf

In The Brain of Udi Dahan: CQRS, race conditions, and sagas – oh my!

http://skillsmatter.com/podcast/open-source-dot-net/udi-dahan-cqrs-race-conditions-and-sagas

CQRS

http://martinfowler.com/bliki/CQRS.html

Why I Still Love CQRS (and Messaging and Event Sourcing)

http://blog.jonathanoliver.com/2011/05/why-i-still-love-cqrs-and-messaging-and-event-sourcing/

CQRS, Task Based UIs, Event Sourcing agh!

http://codebetter.com/gregyoung/2010/02/16/cqrs-task-based-uis-event-sourcing-agh/

cqrs for dummies – an interlude – has it all been a waste of time?

http://www.blogcoward.com/archive/2011/04/24/cqrs-for-dummiesndashan-interlude-ndash-has-it-all-been-a.aspx

Use CQRS When Constrained on Developers and Time

http://abdullin.com/journal/2011/4/23/use-cqrs-when-constrained-on-developers-and-time.html

Event Sourcing and CQRS, Let’s use it.

http://thinkbeforecoding.com/post/2009/11/02/Event-Sourcing-and-CQRS-Lets-use-it

DDDD: Why I Love CQRS

http://blog.jonathanoliver.com/2009/10/dddd-why-i-love-cqrs/

CQRS – The Domain Events

http://elegantcode.com/2009/11/20/cqrs-the-domain-events/

Command / Query service in WCF

http://www.codinginstinct.com/2010/11/command-query-service-in-wcf.html

Theory of CQRS Command Handlers: Sagas, ARs and Event Subscriptions

http://abdullin.com/journal/2010/9/26/theory-of-cqrs-command-handlers-sagas-ars-and-event-subscrip.html

Race Conditions Don’t Exist

http://www.udidahan.com/2010/08/31/race-conditions-dont-exist/

Event Sourcing

http://martinfowler.com/eaaDev/EventSourcing.html

My Links

http://delicious.com/ajlopez/cqrs+tutorial+toblog

More links are coming.

Keep tuned!

Angel “Java” Lopez

http://www.ajlopez.com


http://twitter.com/ajlopez

CQRS: Links, News And Resources (3)

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The third installment of this link series. This time, tutorial resources.

CQRS Starting Page

http://abdullin.com/cqrs/

This page lists learning materials, documents, videos, tips and reference implementations about getting started with Command and Query Responsibility Segregation.

Clarified CQRS

http://www.udidahan.com/2009/12/09/clarified-cqrs/

Towards an immutable domain model – introduction (part 1)

http://blog.zilverline.com/2011/02/01/towards-an-immutable-domain-model-introduction-part-1/

Aclarando CQRS (traducción)

https://docs.google.com/document/d/1-5rmzY48aXZp3A-uaULnwU0gV7r1E1ZkEV1i5YBn-LI/edit?pli=1

CQRS Documents by Greg Young

http://cqrs.files.wordpress.com/2010/11/cqrs_documents.pdf

In The Brain of Udi Dahan: CQRS, race conditions, and sagas – oh my!

http://skillsmatter.com/podcast/open-source-dot-net/udi-dahan-cqrs-race-conditions-and-sagas

CQRS

http://martinfowler.com/bliki/CQRS.html

Why I Still Love CQRS (and Messaging and Event Sourcing)

http://blog.jonathanoliver.com/2011/05/why-i-still-love-cqrs-and-messaging-and-event-sourcing/

CQRS, Task Based UIs, Event Sourcing agh!

http://codebetter.com/gregyoung/2010/02/16/cqrs-task-based-uis-event-sourcing-agh/

cqrs for dummies – an interlude – has it all been a waste of time?

http://www.blogcoward.com/archive/2011/04/24/cqrs-for-dummiesndashan-interlude-ndash-has-it-all-been-a.aspx

Use CQRS When Constrained on Developers and Time

http://abdullin.com/journal/2011/4/23/use-cqrs-when-constrained-on-developers-and-time.html

Event Sourcing and CQRS, Let’s use it.

http://thinkbeforecoding.com/post/2009/11/02/Event-Sourcing-and-CQRS-Lets-use-it

DDDD: Why I Love CQRS

http://blog.jonathanoliver.com/2009/10/dddd-why-i-love-cqrs/

CQRS – The Domain Events

http://elegantcode.com/2009/11/20/cqrs-the-domain-events/

Command / Query service in WCF

http://www.codinginstinct.com/2010/11/command-query-service-in-wcf.html

Theory of CQRS Command Handlers: Sagas, ARs and Event Subscriptions

http://abdullin.com/journal/2010/9/26/theory-of-cqrs-command-handlers-sagas-ars-and-event-subscrip.html

Race Conditions Don’t Exist

http://www.udidahan.com/2010/08/31/race-conditions-dont-exist/

Event Sourcing

http://martinfowler.com/eaaDev/EventSourcing.html

My Links

http://delicious.com/ajlopez/cqrs+tutorial+toblog

More links are coming.

Keep tuned!

Angel “Java” Lopez

http://www.ajlopez.com


http://twitter.com/ajlopez

CQRS: Links, News And Resources (2)

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More CQRS links, this time oriented to examples:

Greg Young Simple CQRS Sample

https://github.com/gregoryyoung/m-r/

Command-Query Separation on Windows Azure

http://ntotten.com/2011/10/command-query-separation-on-windows-azure/

jamuhl / nodeCQRS

https://github.com/jamuhl/nodeCQRS

CQRS Sample in node.js

CQRS and Event Sourcing with NCQRS

http://www.nicholascloud.com/2011/09/cqrs-and-event-sourcing-with-ncqrs/

ddd-cqrs-sample

http://code.google.com/p/ddd-cqrs-sample/

Domain Driven Design & Command-query Responsibility Segregation sample project – Java, Spring, JPA

archfirst

https://code.google.com/p/archfirst/

Sharing software best practices through real-world examples

Case Study CQRS

http://abstractiondev.wordpress.com/case-study-cqrs/

Scalable and Simple CQRS Views in the Cloud

http://abdullin.com/journal/2011/1/19/scalable-and-simple-cqrs-views-in-the-cloud.html

Eventual Consistency and Set Validation

http://codebetter.com/gregyoung/2010/08/12/eventual-consistency-and-set-validation/

Event Sourcing and CQRS, Let’s use it.

http://thinkbeforecoding.com/post/2009/11/02/Event-Sourcing-and-CQRS-Lets-use-it

Event Sourcing and Read Model generation

http://stackoverflow.com/questions/4064067/event-sourcing-and-read-model-generation

tyronegroves / SimpleCQRS

https://github.com/tyronegroves/SimpleCQRS

A framework for building applications using the CQRS and Event Sourcing patterns

CQRS Starting Page

http://abdullin.com/cqrs/

This page lists learning materials, documents, videos, tips and reference implementations about getting started with Command and Query Responsibility Segregation.

Command / Query service in WCF

http://www.codinginstinct.com/2010/11/command-query-service-in-wcf.html

Release of Lokad-CQRS for Windows Azure, Community Credits.

http://abdullin.com/journal/2010/10/15/release-of-lokad-cqrs-for-windows-azure-community-credits.html

Teach Visual Studio Your Own Language – Easy!

http://abdullin.com/journal/2010/10/12/teach-visual-studio-your-own-language-easy.html

EDA CQRS Betting Sample

http://fornax-sculptor.blogspot.com/2010/09/eda-cqrs-betting-sample.html

Simple CQRS + NHibernate event store

http://jasondentler.com/blog/2010/10/simple-cqrs-nhibernate-event-store/

jhicks / EventSourcing

https://github.com/jhicks/EventSourcing

The event sourcing piece of a CQRS framework

Lokad CQRS

http://lokad.github.com/lokad-cqrs/

Lokad.CQRS is a .NET framework and a set of guidance materials for building distributed and scalable applications to be run on-premises or in the cloud. This project helps to design and develop decoupled systems locally and bring them to the distributed environments

Ncqrs Framework

http://ncqrs.org/

Ncqrs is a framework for .NET helps build scalable, extensible and maintainable applications by supporting developers apply the CQRS architectural pattern.

https://github.com/ncqrs/ncqrs

CQRS and Event Sourcing

http://codebetter.com/gregyoung/2010/02/13/cqrs-and-event-sourcing/

Recording of Mark Nijhof on CQRS @ E-VAN 18 November 2009

http://europevan.blogspot.com/2009/11/recording-of-mark-nijhof-on-cqrs-e-van.html

MarkNijhof / Fohjin

https://github.com/MarkNijhof/Fohjin

My Links

http://delicious.com/ajlopez/cqrs+example

CQRS: Links, News and Resources (1)

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CQRS (Command Query Responsibility Separation) is  a big topic. CQRS is not accepted by everyone: maybe complete implementations have added implementation complexity, and you have to know when to use it or not. You have CQRS with and without DDD (Domain-Driven Design) and with and without Event Sourcing.

In this post I included links with videos, podcasts, Infoq presentations about CQRS. More links are coming!

From:
http://en.wikipedia.org/wiki/Domain-driven_design

Command-query separation (CQRS)

CQRS an architectural pattern for separation of reads from writes where the former is a Query and the latter is a Command. Commands mutate state and are hence approximately equivalent to method invocation on your aggregate roots/entities and Queries query state, but do not mutate it. CQRS is a derivative architectural pattern from the design pattern called Command and Query Separation (CQS) which was coined by Meyer. While CQRS does not require DDD, domain driven design makes the distinction between commands and queries, explicit, around the concept of an aggregate root. The idea is that a given aggregate root has a method that corresponds to a command and a command handler invokes the method on the aggregate root. The aggregate root is responsible for performing the logic of the operation and yielding either a number of events or a failure (exception or execution result enumeration/number) response OR (if ES is not used) just mutating its state for a persister implementation such as an ORM to write to a data store, while the command handler is responsible for pulling in infrastructure concerns related to the saving of the aggregate root’s state or events and creating the needed contexts (e.g. transactions).

Jonathan Oliver on Event Sourcing and EventStore @ E-VAN 25 October 2011

CQRS and Event Sourcing with NCQRS

http://www.nicholascloud.com/2011/09/cqrs-and-event-sourcing-with-ncqrs/

CQRS, race conditions, and sagas – oh my!

http://skillsmatter.com/podcast/open-source-dot-net/udi-dahan-cqrs-race-conditions-and-sagas

CQRS, not just for server systems

http://skillsmatter.com/podcast/design-architecture/cqrs-not-just-for-server-systems

CQRS is of great use for building things other than server side systems as most people tend to use it for. In this talk, Greg Young will look at the use of CQRS in other kinds of systems and how it can greatly decrease complexity while providing value to users of the system.

Simple is better

http://skillsmatter.com/podcast/design-architecture/simple-is-better/

Very often we take on huge couplings in order to get value. This coupling forces us to build software in certain ways that may or may not be good for us at the time. In this talk, Greg Young looks at some common real world examples of these problems — and, more importantly, how to avoid them

CQRS, CQS y Event Messaging

http://www.altnethispano.org/wiki/van-2010-10-02-cqrs-cqs-event-messaging.ashx

by @cprieto

Abstraction Demo Videos
http://abstractiondev.wordpress.com

Unleash your Domain

Command Query Responsibility Segregation

http://skillsmatter.com/podcast/open-source-dot-net/udi-dahan-command-query-responsibility-segregation/rl-311

London .NET User Group:Command Query Responsibility Segregation

NServiceBus Architectural Principles

http://www.nservicebus.com/ArchitecturalPrinciples.aspx

Erik Rozendaal of Holland talking about CQRS and Event Sourcing

http://cqrs.wordpress.com/2010/09/13/video-presentation/

Distributed Podcast

http://distributedpodcast.com/

CQRS, DDD, Cloud computing and much more!

Command-Query Responsibility Segregation

http://www.infoq.com/presentations/Command-Query-Responsibility-Segregation

Recording of Mark Nijhof on CQRS @ E-VAN 18 November 2009

http://europevan.blogspot.com/2009/11/recording-of-mark-nijhof-on-cqrs-e-van.html

Mark Nijhof on CQRS Sample @ E-VAN 18 November 2009

A Discussion with Allard Buijze on CQRS with the Axon framework

http://www.infoq.com/articles/cqrs_with_axon_framework

CQRS and Friends: possibly distributed systems, intentionally.

http://www.altnethispano.org/wiki/van-2011-02-19-cqrs.ashx

by @silverspoon

My Links

http://delicious.com/ajlopez/cqrs+video


http://delicious.com/ajlopez/cqrs+podcast

Keep tuned!

Angel “Java” Lopez

http://www.ajlopez.com


http://twitter.com/ajlopez