About React

React is a JavaScript library that allows us to build modern and complex web interfaces. It’s becoming more and more popular and there is a huge buzz around it. The last is absolutely normal as Facebook is the creator of the library and they have heavily invested on it. They even have developed some architecture guidelines on how to build a React application which is called Flux. Lately I am involved in a project that we are using these tools and I have to say it is really fun as it is a fresh technology and certainly changes the way I was used to develop web applications. Lastly React is one of the best libraries out there to develop what is called an Isomorphic JavaScript application. I won’t explain more why isomorphic looks like a safe choice for the future of the web as this is not the goal of the post.
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node.js and Visual Studio

node.js is a very popular platform which allows having Javacript executed on the server. This is what everybody reads when navigating on the official site:
Node.js® is a platform built on Chrome’s JavaScript runtime for easily building fast, scalable network applications. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices.
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OWIN and project Katana

OWIN (Open Web Iterface for .NET) is the new way of developing web applications in the .NET ecosystem. It is a great approach as it offers the flexibility of decoupling the application from the hosting environment itself. This means that as long as we develop a Web application on top of OWIN then we can easily host it outside the standard hosting environment so far which is IIS. A quick example is that by using a specific nuget package. As OWIN is just a specification then we need an implementation of this in each platform we want to support. The implementation for Microsoft’s platform is called Katana.
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During last weekend I had the opportunity to attend ItProDevConnection for third time and second time in a row as public speaker. I have to say it was an amazing experience, I so enjoyed myself being part of a huge tech community. I met so many interesting people among else and heard about latest trends in development.
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Connection with previous posts

This is the last post of the series of how we can use Entity Framework Code First to create a multitenant application. You are requested first to read Part 1 where there is an introduction in the problem we are trying to solve and some infrastructure code required to continue. Part 2 describes the query filtering that is happening automatically in the entire application. In this post I am going to show how we can use the CommandTree interceptor in order to modify the insert, update and delete commands. The idea of implement something like this came to my mind after watching Rowan Miller’s excellent session in North America TechEd, which I highly recommend you to watch.
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