Intro to Node.js (for .NET Developers)

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Intro to Node.js (for .NET Developers) David Neal | reverentgeek.com | @reverentgeek var trustMe = { consumes: ["Bacon", "Caffeine"], hasBeard: true, knowsHowToComputer: true }

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Y2K

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Up Ahead •  Why Node.js? •  Crash course •  Tools and frameworks •  Deployment

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JavaScript… …has won the Web. – Scott Hanselman

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Anything that can be written in JavaScript… …will eventually be written in JavaScript – Somebody with incredible powers of observation (e.g., search for “jslinux”)

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JavaScript… …is tragically important. – Douglas Crockford, Author of “JavaScript: The Good Parts”

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Node.js exemplifies… Start with the simplest solution that works. Do one thing, and do it well.

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Node.js is… •  blazing fast •  highly concurrent •  low-friction •  cross-platform •  modern web server

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Why Node.js? •  Rapid innovation & delivery •  Developer happiness •  Attract & retain talent •  Performance “Why Node.js is Becoming the Go-To Technology in the Enterprise” – nearform.com

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•  2x faster development with fewer developers •  33% fewer lines of code •  40% fewer ﬁles •  2x improvement requests/sec •  35% decrease in avg response time

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“We are seeing big scale gains, performance boosts and big developer productivity.”

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•  Black Friday, 2013 •  Mobile platform •  < 1% CPU utilization •  200,000+ concurrent users

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NBC Universal •  ASP.NET to Node.js •  300 million page views/month •  Start render time: 8.8 to 1.3 seconds •  Page speed: 100+ to <10 seconds NBC News, Today.com, CNN…

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Who else is using Node.js? •  Dow Jones (WSJ) •  eBay •  Groupon •  LinkedIn •  Rdio •  Shutterstock •  The New York Times •  Uber •  Yammer •  Zendesk nodjs.org/industry

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Node.js Use Cases •  Single-page apps •  API server (REST, Hypermedia, etc.) •  Real-time, streaming, WebSockets •  Chat, IM, social media •  Dashboards •  Proxy service In other words… the INTERNET

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io.js •  Fork of node.js •  Latest Chrome V8, ES6 •  Open governance

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What’s our story? •  ASP.NET MVC, C# •  SQL Server + NHibernate •  JavaScript + JQuery

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What’s our story? •  JavaScript •  Recruiting •  Productive, less friction –  Testing –  Microservices –  RabbitMQ, riak, redis •  Cross-platform

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Ready to jump in?

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Installing Node.js 1.  http://nodejs.org 2.  Click big, green INSTALL 3.  Run installer – OR – Install using Chocolatey (http://chocolatey.org) C:\> choco install nodejs.install

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Installing Node.js C:\> node –v v0.10.38 C:\> npm –v 1.4.28

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Dependencies – OR – Python 2.x (https://python.org/downloads/ C:\> choco install python2

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Dependencies – OR – Visual C++ 2010 Express C:\> choco install VCExpress2010

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Node.js Tools for Visual Studio Minimum requirements •  VS 2012 Pro or VS 2013 Express •  Latest VS updates http://nodejstools.codeplex.com

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Hey y’all watch this…

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Other editors •  Sublime Text 3 •  Atom •  WebStorm

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Debugging C:\> node debug hello.js

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Debugging C:\> node debug hello.js

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Debugging C:\> node install –g node-inspector

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Debugging C:\> node install –g node-inspector C:\> node-debug hello.js

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Deploying •  Don’t include node_modules folder •  …unless you create builds for speciﬁc targets •  Azure is super-easy •  Windows –  iisnode for web apps –  winser for services •  Linux – forever

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Hosting Node.js on Azure reverentgeek.com/hosting-node-js-on-microsoft-azure/

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Recommended Toolbox Package What it do, yo lodash JavaScript utilities when JavaScript promise library async async/parallel execution request (or rest) http client gulp build engine, test runner socket.io sockets, real-time node-inspector Debugging mocha test framework chai TDD/BDD assertion library sinon spies, stubs, mocks

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Node frameworks MVC •  Express •  Meteor •  Sails •  Hapi API •  Restify •  LoopBack •  Autohost nodeframework.com nodewebmodules.com

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Edge.js •  Run .NET in-process •  …including F#, ADO.NET, Python, and Powershell •  Execute inline code, ﬁles, or assemblies •  Alternative to writing native modules in C •  .NET 4.5 or Mono 3.1

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What can Edge.js do? •  Leverage existing .NET investment •  SQL Server (or other DBs) •  TFS, SharePoint, Exchange, etc. •  Active Directory •  Hardware (e.g. camera, microphone, printer, win32) •  Video encoding, or other CPU-intensive work •  Powershell

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.NET + Node.js Integration •  Edge.js (possible migration strategy) •  request module to call .NET Web Services •  Messaging (e.g. RabbitMQ)

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Thank you! David Neal @ReverentGeek [email protected] reverentgeek.com Demos + Resources bit.ly/node-demos Please rate me! h#p://spkr8.com/t/54801