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YAGNI - 'Poor-mans CQRS' sample application with Entity Framework

This week Daniel Lang published an interesting article about unnecessary overhead in simple applications.
In a nutshell he proposes an architecture called "Poor-mans CQRS". In his sample he uses an ASP.NET MVC application. The controllers retrieve their required data directly from the database (Query), and updates are performed in service layer (Command).
In this post I will provide a (simple) application, which is based on the Entity Framework. It shows the principle and explains how unit tests can be written without querying a real database.

ASP.NET MVC - SampleApplication based on Entity Framework 4.0

The intention of the MVCSampleApplication was to build a sample application using the latest .NET technologies.

The ASP.NET MVC application provides a simple guestbook, where users can register and post comments. Administrators may additionally edit and delete comments. Moreover a WPF based client is included, using the same services as the web application.

This article describes the key implementation aspects and overall architecture of the application. It does not contain a step-by-step tutorial explaining every detail, as you find many blog posts discussing all the technologies being used by this project on the internet. The goal here was to put all these technologies together in one application.