Preface

Express is a battle-tested web framework for Node.js, and is used in production in companies such as Paypal or MySpace. It has come a long way since its initial release back in 2009, with more than a hundred contributors and an active community of developers.

The simplicity of Express has even enabled people to build more complex applications on top of it, such as Kraken.js or Sails.js.

This book is aimed at developers who want to learn more about delivering real-world applications with Express 4 by taking advantage of the advanced features it provides and also benefiting from the great ecosystem of existing modules from NPM.

You will find a lot of practical examples along with different tips and tricks that will help you develop a better application at a faster pace. Even if you decide to use another framework in the future or create your own, the things you have learned here will be useful in the future.