Enterprise JavaBeans (EJB) is a major new technology for server-side application development in Java. It offers a component architecture for developing distributed, multitiered enterprise applications. This model allows you to build complex, mission-critical systems using simple snap-together pieces that model individual business...

Do you know what to do if your web application goes viral and usage suddenly explodes? This concise guide introduces you to Couchbase Server, an extremely fast NoSQL database that automatically distributes data across a cluster of commodity servers or virtual machines. You’ll learn hands-on how to build a Couchbase cluster...

"Great for beginners -- even if you don't know object-oriented programming, you can learn from examples on the 'Net and be on your way very soon. You will be able to confidently build apps that rival the ones included by Apple itself."-- Josh Content, iPhone Developer

Developers everywhere are...

Building distributed applications is difficult enough without having to coordinate the actions that make them work. This practical guide shows how Apache ZooKeeper helps you manage distributed systems, so you can focus mainly on application logic. Even with ZooKeeper, implementing coordination tasks is not trivial, but this...

Author Marc...

Orchestrating asynchronous function calls in JavaScript often leads to callback hell, but there is a reliable way to avoid this painful state of affairs. With this concise and simple guide, you’ll learn how to use jQuery deferreds and promises, an elegant approach for managing asynchronous calls in both client and server...