My first Play Framework application has recently gone live. This time it was the Java version of the framework, next time I may move on to Scala finally. Nevertheless, I've learned a lot and will try to share some knowledge here. The application is meant for managing the data stored in the Dydra graph database ( RDF & SPARQL ). It's a thick client application meaning that the data loading happens in the client JavaScript layer via JSON requests, while routing and user authentication is done by means of Play Framework. Also I've made use of the RequireJS support in Play Framework for dynamic JS module loading. For the UI I've chosen a well-known YUI library . More details are following below. Application architecture. User model and authentication. Dydra database layer and SPARQL client. JavaScript logic and YUI. RequireJS module loading. Application architecture As any web application, this one can be described in terms of MVC pattern . Play Framewor...