Book Image

Mastering Node.js

By : Sandro Pasquali
Book Image

Mastering Node.js

By: Sandro Pasquali

Overview of this book

Node.js is a modern development stack focused on providing an easy way to build scalable network software. Backed by a growing number of large companies and a rapidly increasing developer base, Node is revolutionizing the way that software is being built today. Powered by Google's V8 engine and built out of C++ modules, this is a JavaScript environment for the enterprise.Mastering Node.js will take the reader deep into this exciting development environment. Beginning with a comprehensive breakdown of its innovative non-blocking evented design, Node's structure is explained in detail, laying out how its blazingly fast I/O performance simplifies the creation of fast servers, scalable architectures, and responsive web applications.Mastering Node.js takes you through a concise yet thorough tour of Node's innovative evented non-blocking design, showing you how to build professional applications with the help of detailed examples.Learn how to integrate your applications with Facebook and Twitter, Amazon and Google, creating social apps and programs reaching thousands of collaborators on the cloud. See how the Express and Path frameworks make the creation of professional web applications painless. Set up one, two, or an entire server cluster with just a few lines of code, ready to scale as soon as you're ready to launch. Move data seamlessly between databases and file systems, between clients, and across network protocols, using a beautifully designed, consistent, and predictable set of tools.Mastering Node.js contains all of the examples and explanations you'll need to build applications in a short amount of time and at a low cost, running on a scale and speed that would have been nearly impossible just a few years ago.
Table of Contents (20 chapters)
Mastering Node.js
About the Author
About the Reviewers

Real-time activity updates of multiple worker results

Using what we've learned we are going to construct a multiprocess system to track the behavior of all visitors to a sample web page. This will be composed of two main segments: a WebSocket-powered client library, which will broadcast each time a user moves a mouse, and an administration interface visualizing user interaction as well as when a user connects and disconnects from the system. Our goal is to show how a more complex system might be designed (such as one that tracks and graphs every click, swipe, or other interaction a user might make). The final administration interface will show activity graphs for several users and resemble this:

Because this system will be tracking the X and Y positions of each mouse motion made by all users, we will spread this continuous stream of data across all available machine cores using cluster, with each worker in the cluster sharing the burden of carrying the large amounts of socket data being fed...