O'Reilly Opa: Up and Running

Opa: Up and Running, Rapid and Secure Web Development Opa provides a complete stack for web application development based on a new programming language integrated with its web server, database engine and distribution libraries. This unique setup and tight coupling allows concise, secure and scalable web applications. Learning Opa gets readers started by building a set of simple applications for common reusable tasks, working through basic web application design through realtime updates, database interactions, and web service design.