Book Image

Node Cookbook

By : David Mark Clements
Book Image

Node Cookbook

By: David Mark Clements

Overview of this book

The principles of asynchronous event-driven programming are perfect for today's web, where efficient real-time applications and scalability are at the forefront. Server-side JavaScript has been here since the 90's but Node got it right. With a thriving community and interest from Internet giants, it could be the PHP of tomorrow. "Node Cookbook" shows you how to transfer your JavaScript skills to server side programming. With simple examples and supporting code, "Node Cookbook" talks you through various server side scenarios often saving you time, effort, and trouble by demonstrating best practices and showing you how to avoid security faux pas. Beginning with making your own web server, the practical recipes in this cookbook are designed to smoothly progress you to making full web applications, command line applications, and Node modules. Node Cookbook takes you through interfacing with various database backends such as MySQL, MongoDB and Redis, working with web sockets, and interfacing with network protocols, such as SMTP. Additionally, there are recipes on correctly performing heavy computations, security implementations, writing, your own Node modules and different ways to take your apps live.
Table of Contents (16 chapters)
Node Cookbook
About the Author
About the Reviewers


HTTP was not made for the kind of real-time web applications that many developers are creating today. As a result, all sorts of workarounds have been discovered to mimic the idea of bi-directional, uninterrupted communication between servers and clients.

WebSockets don't mimic this behavior, they provide it. A WebSocket works by stripping down an HTTP connection so it becomes a persistent TCP-like exchange, thus removing all the overhead and restrictions HTTP introduces.

The HTTP connection is stripped (or rather upgraded) when both the browser and server support WebSockets. The browser discovers this by communicating with the server via GET headers. Only newer browsers (IE10+, Google Chrome 14, Safari 5, Firefox 6) support WebSockets.

WebSockets is a new protocol. JavaScript combined with the Node framework is often versatile and low level enough to implement protocols from scratch, or failing that C/C++ modules can be written to handle more obscure or revolutionary logic. Thankfully...