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var about = {Topic: ‘Node.js’,Presenter : 'Jason Park‘

}

Brown Bag SessionQuick tour on Node JS

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Who’s talking

• Singapore Avanade App Dev family

• ASP.NET (MVC) / C# guy

• Tech lover

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What is Node JS?

• Node.js uses an event-driven, non-blocking

I/O model that makes it lightweight and

efficient, perfect for data-intensive real-time

applications that run across distributed

devices

NodeJS.org

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What is Node JS?

• 2nd most popular project in GitHub 

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What is Node JS?

• Server-side Javascript

• Event-driven

• Built on Chrome V8 engine

• NPM (like NuGet for .NET)

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What is Node JS?

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Server-Side JS?

• But wait, server-side JS[1] has been around since

1996!

• What's makes Node JS so special?

[1] Netscape Enterprise Server

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Speed

• Handles thousands of requests/sec with no

performance degradation

• Ideal for hosting a single-page application - highly

concurrent server application

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Speed

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How?

• Keep slow operations from blocking other operations

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How?

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How?

• 1 Threaded Application

PROS: Good for conceptual simplicityCONS: Bad for CPU-bound algorithm

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How?

• Traditional I/O

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How?

• JavaScript is already geared towards event-based programming

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How?

• Async I/O

No need to wait for disk.Do something else meanwhile!

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HTTP Server

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TCP Server

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Consider Node JS if you

• Want to have a website handling large number of

concurrent connections

• Want to quickly build an Ajax-rich web application

• Want to learn JavaScript/Event-based programming

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Consider other options if you

• Want something mature

• Want a framework with enterprise-level security

proven in the market

• Need IDE like Visual Studio for coding

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Big Names using Node JS

• Microsoft

– Azure & WebMatrix support

• Linked In

– Mobile application running on Node JS

• Wallmart

– Mobile application running on Node JS

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Questions?