Where do I find some good examples for DDD

Question

I m learning about Domain Driven Design  however there are some practical issues that are confusing to me that I think seeing some good samples might clear up   Does anyone know of some good working code samples that do a good job of modelling basic DDD concepts   Particularly interested in   An illustrative Domain Model Repositories Use of Domain Application Services Value Objects Aggregate Roots

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Code Camp Server  Jeffrey Palermo s sample code for the book ASP NET MVC in Action   While the book is focused on the presentation layer  the application is modeled using DDD

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ddd-cqrs-sample is also a good resource  Written with Java  Spring and JPA   Updated link   https   github com BottegaIT ddd-leaven-v2

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NET DDD Sample from Domain-Driven Design Book by Eric Evans can be found here  http   dddsamplenet codeplex com  Cheers   Jakub G

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The difficulty with DDD samples is that they re often very domain specific and the technical implementation of the resulting system doesn t always show the design decisions and transitions that were made in modelling the domain  which is really at the core of DDD  DDD is much more about the process than it is the code   as some say  the best DDD sample is the book itself    That said  a well commented sample app should at least reveal some of these decisions and give you some direction in terms of matching up your domain model with the technical patterns used to implement it   You haven t specified which language you re using  but I ll give you a few in a few different languages   DDDSample - a Java sample that reflects the examples Eric Evans talks about in his book  This is well commented and shows a number of different methods of solving various problems with separate bounded contexts  ie  the presentation layer   It s being actively worked on  so check it regularly for updates   dddps - Tim McCarthy s sample C  app for his book   NET Domain-Driven Design with C   S arp Architecture - a pragmatic C  example  not as  pure  a DDD approach perhaps due to its lack of a real domain problem  but still a nice clean approach   With all of these sample apps  it s probably best to check out the latest trunk versions from SVN whatever to really get an idea of the thinking and technology patterns as they should be updated regularly

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Not source projects per say but I stumbled upon Parleys com which has a few good videos that cover DDD quite well  requires flash     Improving Application Design with a Rich Domain Model Get Value Objects Right for Domain Driven Design  unavailable    I found these much more helpful than the almost non-existent DDD examples that are currently available

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Check out Project Silk  Not only does it demonstrate DDD but other cutting edge patterns  This is an excellent resource for any Web Developer  A full overview of the project can be found on MSDN

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This is a good example based on domain driven design and explains why it is important to have separate domain layer  Microsoft spain - DDD N Layer Architecture

[domain-driven-design] Where do I find some good examples for DDD?

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