Project "a CQRS Journey"

For the things we have to learn before we can do them, we learn by doing them. ~Aristotle

Microsoft patterns & practices

Announcing V1 Pseudo-Production Release

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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. Over the next few weeks we plan more pseudo-production releases and as we go through them we will be describing our experiences in the guidance documentation.

Today we are releasing the first of these pseudo-production releases: Contoso Conference Management System (V1).

The current release consists of three bounded contexts:

  • Conference Management (implemented using a traditional CRUD-style architecture).
  • Orders and Registrations (implementing the CQRS pattern and using event sourcing).
  • Payments (implementing the CQRS pattern and using a SQL-based storage).

Keep in mind, while based on the real-world requirements, it is still a sample application. It doesn’t include the following:

  • Authorization (on the backlog for V2).
  • Styling for the conference management web site (on the backlog for V2).
  • Integration with a real third-party payment processor (out of scope for the guidance project; we’ll keep the simulated one).
  • Conference details (description, speakers, tracks, sessions, etc.) - you will see static data in the registration hub for now.
  • Perf testing (on the backlog for V3).

If you would like to explore the code in the V1 release, you can download it from GitHub here. To help you get started with building/deploying/running the V1 release code see the release notes here.

The current release uses the Windows Azure Service Bus to provide its messaging infrastructure and can be deployed to Windows Azure. You can access a deployed version of the application as a Registrant and as a Business Customer. Please feel free to use the application and to generate some sample data for us so that we can migrate it for our V2 release.

Note: You can also run a copy of the application locally without using Windows Azure or Windows Azure Service Bus as described in the release notes.

We would appreciate your feedback on both the code and the written guidance. You can submit your reviews either via GitHub (comments, pull requests, issues) or via our lightweight review system.

If you’d like to participate in this sample system evolution and work on any improvements of the existing bounded contexts or new ones, check out our backlog. We’ll be happy to see your pull requests!