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JavaScript… …has won the Web. Scott Hanselman

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Any application that can be written in JavaScript… …will eventually be written in JavaScript (search for “jslinux”) Atwood’s Law:

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JavaScript… …is tragically important. Douglas Crockford

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

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ES 2016 (ES6) Support https://kangax.github.io/compat-table/es6/

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

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

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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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Why Node.js? productivity satisfaction performance lower costs Improved results year-over-year 2017 Node.js Foundation User Survey, Executive Summary

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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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• Backend API for SPAs, Mobile apps, etc. • “Serverless” computing • Real-time, streaming • WebSockets, push notifications • Chat, IM, social media • DevOps • Microservices Node.js Use Cases

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Node.js Use Cases • Backend API for SPAs, Mobile apps, etc. • “Serverless” computing • Real-time, streaming • WebSockets, push notifications • Chat, IM, social media • DevOps • Microservices

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More than just backend • Create Automation Scripts • Internet of Things • Create CLI tools using nexe • Create Desktop Apps

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Atom Slack Visual Studio Code

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Fandango • dramatically shorter development cycles • micro-services architecture • flexibility in deployment • easily scalable infrastructure “Fandango Goes Live with Node.js” – 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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• Black Friday, 2013 • Mobile platform • 200,000,000+ users • 10 CPU cores, 28 GB RAM • < 1% CPU utilization • Deployed updates

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Who else is using Node.js? • NASA • Netflix • Amazon • Medium • GE • Wordpress • CapitalOne • eBay • Target • Airbnb • Samsung • GoPro

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DevOps • Small footprint • Cross-platform • Event-driven • OSS tools • Containers

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“What is Node.js used for: The 2015 Node.js Overview Report” – blog.risingstack.com

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Installing Node.js https://nodejs.org

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Installing Node.js Mac or Linux? Use nvm! https://github.com/creationix/nvm Windows? Use Chocolatey! https://chocolatey.org/ C:\> choco install nodejs.install > nvm install 8

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Installing Node.js > node –v v8.11.1 > npm –v 5.6.0

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module-usage-example.js

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module-usage-example.js

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module-usage-example.js

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module-usage-example.js

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module-usage-example.js

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callback-example-1.js

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callback-example-1.js

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callback-example-1.js

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callback-example-2.js

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callback-example-2.js

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callback-example-2.js

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callback-example-2.js

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callback-example-3.js

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callback-example-3.js

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callback-example-3.js

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callback-example-3.js

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temperature.js

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temperature.js

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temperature.js

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temperature.js

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temperature.js temp-example.js

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temperature.js temp-example.js

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temperature.js temp-example.js

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temperature.js temp-example.js

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temperature.js temp-example.js

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config.js

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config.js

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config.js

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config.js

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config.js

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config.js

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config.js

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config.js cfg-example.js

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config.js cfg-example.js

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config.js cfg-example.js

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config.js cfg-example.js

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config.js cfg-example.js

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config.js cfg-example.js app.json

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sql-example.js

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sql-example.js

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sql-example.js

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sql-example.js

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sql-example.js

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sql-example2.js

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sql-example2.js

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sql-example2.js

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Deploying • Windows – iisnode for web apps – winser for services • Linux – forever • Docker

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Hosting Node.js on Azure • New Node JS Empty Site • Connect to repository • reverentgeek.com/hosting-node-js-on-microsoft-azure/

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Recommended toolbox Package What it do, yo lodash JavaScript utilities async async/parallel execution request, axios, or wreck http clients socket.io sockets, real-time jest, mocha, or lab test frameworks testdouble spies, stubs, mocks

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Node frameworks MVC • Express • hapi • koa • Meteor • Sails API • Restify • LoopBack nodeframework.com

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• 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 • 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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Node.js Integration Strategies • Node.js as proxy or nginx • request module to call APIs • Messaging (e.g. RabbitMQ, ZeroMQ Azure Service Bus) • Edge.js for .NET

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http://bit.ly/node-crash-course