Node.js Node.js is an open source, cross-platform runtime environment for server-side and networking applications. Node.js applications are written in JavaScript, and can be run within the Node.js runtime on OS X, Microsoft Windows, Linux, FreeBSD, NonStop and IBM i. Node.js provides an event-driven architecture and a non-blocking I/O API that optimizes an application's throughput and scalability. These technologies are commonly used for real-time web applications. Node.js is gaining adoption as a server-side platform[4] and is used by Microsoft,[5][6] Yahoo!,[7] Walmart,[8] Groupon,[9] SAP,[10] LinkedIn,[11][12] Rakuten, PayPal,[13][14] Voxer,[15] and GoDaddy.[16] History[edit] Ryan Dahl, creator of Node.js Node.js was invented in 2009 by Ryan Dahl, and other developers working at Joyent.[17] Node.js was created and first published for Linux use in 2009. Dahl was inspired to create Node.js after seeing a file upload progress bar on Flickr. In January 2014, Schlueter announced Timothy J. V8[edit]
geoloqi/MapAttack - GitHub cluster - Node.js v0.6.0 Manual Cluster A single instance of Node runs in a single thread. To take advantage of multi-core systems the user will sometimes want to launch a cluster of Node processes to handle the load. The cluster module allows you to easily create a network of processes all which share server ports. var cluster = require('cluster');var http = require('http');var numCPUs = require('os').cpus().length; if (cluster.isMaster) { for (var i = 0; i < numCPUs; i++) { cluster.fork(); } cluster.on('death', function(worker) { console.log('worker ' + worker.pid + ' died'); });} else { http.Server(function(req, res) { res.writeHead(200); res.end("hello world\n"); }).listen(8000);} Running node will now share port 8000 between the workers: % node server.js Worker 2438 online Worker 2437 online The difference between cluster.fork() and child_process.fork() is simply that cluster allows TCP servers to be shared between workers. cluster.fork is implemented on top of child_process.fork. cluster.fork() # cluster.isMaster #
Meet Node.js | PeepCode Screencasts for Web Developers and Alpha Geeks Preview Download Free Preview NOTE: The code download has been updated for the latest Node 0.6.10 release and NPM 1.1.1. The Web has seen at least four major advancements in browser technology, about once every five years. Ajax has been around for five years, and we’re at the next jump: persistent connections between server and client. Node.js makes it easy to write asynchronous, event-driven applications that serve static, dynamic, and persistent data to clients while using a minimum amount of RAM and CPU time. In this 70-minute Node.js tutorial, you’ll learn to install, use, and understand Node by building a real-time geographical tracking system (live demo). You’ll learn to: Most Node documentation on the web or in print is sparse or outdated. Available as part of a PeepCode Unlimited subscription (including streaming on our iOS app!) Includes a typed transcript. Now includes an extra 30 minutes from the original! Skills
Princeton or Prison: Which is More Expensive? Each month, when over $400 is automatically deducted from my checking account, I can’t help but wonder… why did I choose to go to a private university that cost in excess of $20,000/year (with scholarships)? And why did 17 year-old me think it was okay to imprison then-future me to 17 years of debt? So, it’s not particularly surprising that when I came across this infographic on Fast Co. Design comparing the cost of ivy league higher education and incarceration, I took pause. Perhaps one of the causes of such large individual student loan debt is the fact that at a federal level, more money is spent on corrections than higher education. In addition, a handful of states, including New Jersey, also spend more on incarceration than universities. It’s prison. New Jersey has an inmate population of 26,757.
Profound Heterogeneity » About Burning the Boats/Books For the past 400 years, give or take 100, knowledge has primarly been structured by the codex form. Since the inviting of the printing press rules, customs, laws, and social practices have become organized around the idea that a book is the ideal medium for delivering content. The digital network alters this, or at least in theory ought to alter this. The existence of the digital networked archive reveals as historical many of the principles analog culture treats as natural. Nowhere is this perhaps more clear than in the world of academia, where being a published author serves as proof of expertise, and tenure decisions (especially within the humanities) revolve around being the author of a published book. A brief story to explain . . . In April of 2010 I gave a talk to the Digital Writing and Research Lab at the University of Texas at Austin, titled “Burn the Boats/Books.” What Would Scholarship Look Like If It Were Not Designed to End Up in Books?
Introduction to Nodejs (taking javascript to the server-side) - GeexHQ 0inShare Web Technologies so far Remeber those days when we used only the basic features of html to bring texts, images, tables and few other layouts into our webpage, Later CSS came into the picture and created a huge impact or it has actually influenced the way a normal web user-interface is made. Taking Javascript to the server-side As we see there are a lot of evolutions happening with the web, now developers have thought out of the box in making javascript more than just a client side programming language.There has been considerable interest in bringing javascript onto the server side as well, thanks to the CommonJS project. However, Node.js is a bit different from these solutions, because it is event-based rather than thread based. Featuring “nodeJs†Nodejs is a server-side technology used to provide an easy way to build scalable network programs. Now i’ll show you how to get started with Nodejs, installing it in your machine and then try a small example then deploy it. p>
Google Maps Mania Making the University a Police State This weekend The Chronicle of Higher Education published an opinion piece by Michael Morris arguing that in the name of campus security campuses should start data mining all student internet traffic. Or as the not so subtle, fear mongering, almost fit for Fox News title says, “Mining Student Data Could Save Lives.” Morris’s article to put the matter bluntly is a phenomenally bad idea. Indeed his argument so ill conceived that it is difficult to know where to begin in exposing the problems. I even question The Chronicle’s choice to publish this piece. Let’s start by being clear on what Morris is calling for. In other words Morris is calling not for data mining, as his title suggests, but rather for total surveillance of all student internet activity with an eye towards mining that data. Technologically Morris doesn’t know what he is talking about and ethically he equates himself with some of the world’s most oppressive governments. Morris’s logic goes something like this.
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