This is Node.js

Transcript

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   This is Node.js

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   ceo@likeastore.com http://beletsky.net http://twitter.com/alexbeletsky

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   "I was concerned about the ability to program advanced push

   features into the website like I had seen in Gmail" Ryan Dahl the creator of Node.js
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   V8 Google's open source JavaScript engine. V8 can run standalone,

   or can be embedded into any C++ application.
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   LibUV High performance evented I/O Originally based on LibEV switch

   to LibUV with support of Windows
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   JavaScript Dynamic, prototype-based language Highly popular due to browser programming

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   http://jsconf.eu/2009/speakers.html

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   Why JavaScript? functions as first-class citizen

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   Why JavaScript? function as first-class citizen //closures..

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    JavaScript designed for event-oriented systems There was a natural fit

    V8 + LibEV + JavaScript
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    “Node.js is a platform for easily building scalable network applications.

    Node.js uses an event-driven (single threaded), non-blocking I/O model that makes it lightweight and efficient…” http://nodejs.org
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    Non Blocking I/O The concept of accessing I/O without blocking

    of application
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    https://www.flickr.com/photos/papyrist/ Line to ATM is blocking I/O

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    Mac’s Drive is non-blocking I/O

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    None
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    execution started from first line.. Output:

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    async operation started… Output:

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    but execution goes on.. > ping Output:

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    after ~ms file is read… > ping > pong Output:

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    Event Driven Application flow is driven by events

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    http://misclassblog.com/interactive-web-development/node-js/

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    Single Threaded Single-thread programming concepts is more easy to understand.

    Applications running in single thread are lightweight and efficient
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    “Node.js is designed for building efficient networking applications”

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    Core components: ! • HTTP / HTTPS • TCP /

    UDP / Sockets • DNS • File System • Crypto / Arch • Events • Streams
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    Efficiency & Scalability Build-in server, high concurrency, horizontal scalability, clustering

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    NPM Node Package Manager - the richest collection of high

    quality open source modules
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    None
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    Thanks, @alexbeletsky