Tom Barker 
High Performance Responsive Design [PDF ebook] 
Building Faster Sites Across Devices

Yes, you can use responsive web design to create high performance, compelling websites. With this practical book, author Tom Barker demonstrates that responsive design is not just a frontend-only approach, but also a philosophy for taking advantage of the entire web stack. Responsive design patterns and anti-patterns, derived from heavily used real-world sites, are guiding principles throughout the book.Ideal for frontend-focused web developers, this book shows you how to incorporate responsiveness and performance into your project plan, use Node.js for device-specific functionality on the backend, and write automated tests for a continuous integration environment. Youll explore many useful tools and responsive frameworks, and gain useful insights from Barkers own experience with responsive design along the way.Get a primer on web performance concepts, web runtime performance, and performance tracking tools Write functionality with Node.js that serves up a device-specific experience to the client Explore client-side solutions, such as lazy loading entire sections of a pageincluding images, styling, and content Validate service level agreements (SLAs) by writing automated tests with Phantom JSExamine several responsive frameworks, including the authors server-side framework, Ripple