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Why Node.js? #webkonf Gergely Nemeth @nthgergo

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WHOAMI nodebp.com oneshot.risingstack.com risingstack.com

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JAVASCRIPT - created in 1995 - runs in every major browser - prototype-based, dynamic typing, first- class functions

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JAVASCRIPT

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JAVASCRIPT not just the language of the browser any more

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FIRST-CLASS CITIZEN IN OSX

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INTERNET OF THINGS

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IN THE CLOUD

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NODE.JS “for easily building fast, scalable network applications”

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NODE.JS - V8

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NODE.JS - V8 - nonblocking I/O

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NODE.JS Blocking I/O the traditional way Nonblocking I/O the Node.js way

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NODE.JS - V8 - nonblocking I/O - event driven

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NODE.JS - V8 - nonblocking I/O - event driven - single threaded

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CALLBACKS fs.readFile('/file', function(err, data) { if (err) throw err; console.log(data); });

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SOME OF THE ADOPTERS…

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THE PAYPAL CASE-STUDY existing Java stack

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THE PAYPAL CASE-STUDY Java and Node in parallel

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THE PAYPAL CASE-STUDY One Language to Rule them all

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THE PAYPAL CASE-STUDY Now all new apps at PayPal are written in Node.

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THE PAYPAL CASE-STUDY - Headcount: from ⅓ to 1/10 - Performance: 10x throughput in scale - Lines of code: code size shrink by factor of 3-5

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HOW?

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NPM - open repository for Node modules - proper SemVer - more than 100.000 modules - open source all the things!

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NPM Would be nice to use all this in the browser as well?

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BROWSERIFY - require('modules') in the browser - bundling up all of your dependencies from the node_modules dir - does not pollute the global scope http://blog.risingstack.com/publishing-your-first-browserify-node-module/

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BROWSERIFY // main.js var $ = require('jquery'); $('body').append('

Hello Browserify!

'); npm install jquery --save browserify main.js -o bundle.js

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Which brings us to...

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ISOMORPHIC JAVASCRIPT http://blog.risingstack.com/from-angularjs-to-react-the-isomorphic-way/

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Thanks! Gergely Nemeth @nthgergo