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http://www.wired.com/images_blogs/gadgetlab/2011/05/google_io_f.jpg

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Nice to meet you! ွ᠘᠘ [email protected] https://github.com/sishen @yedingding @yedingding http://weibo.com/presently

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https://pragmatic.ly

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Let’s Begin！

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http://www.sneijers.net/wp-content/uploads/2011/12/web-150x150.jpg http://www.lyngsat-logo.com/tvchannel/it/Real-Time.html

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UX-driven evolution of Web

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http://edudemic.com/wp-content/uploads/2012/07/future-400x300.jpg

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What’s “Real Time”?

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Show Me!

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Instant Messaging

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Apple Push Notification

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Internet Game http://s2.img.766.com/194/120217/1613/144125.jpg

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Persistent Connection

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Real Time in Web?

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Persistent Connection between Brower and Server http://careers.accenture.com/Microsites/uk-graduate/PublishingImages/programmes/consulting/teach_first.jpg

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But

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Based on HTTP Protocol ž  Request - Response Protocol ž  Stateless Protocol

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HTTP Protocol ž  Request - Response Protocol ž  Stateless Protocol

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http://www.pdidevelopment.net/Images/picture/difficulty.jpg

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Solutions ž  XHR Polling ž  Long Polling ž  HTTP Streaming ž  Flash Socket ž  WebSocket ž  ….

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XHR Polling

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Long Polling

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HTTP Streaming

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Flash Socket

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WebSocket

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XHR Polling Long Polling HTTP Streaming Flash Socket WebSocket …… http://www.specialistpainphysio.com/wp-content/uploads/2012/08/thinking-pic.jpg

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How to Choose?

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Real Time Centric Real Time Supplemental VS

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Real Examples

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Pragmatic.ly

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Pragmatic.ly ž WebSocket ž  XHR Polling ž  Long Polling ž  HTTP Streaming ž  Flash Socket

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Integration Fast http://thatimthing.com/wp-content/uploads/2011/02/HandsMovingFastOnKeyboard.jpg

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Work Fast http://www.devilslab.com/wp-content/uploads/2010/08/fast_snail_id86636_size350.jpg

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Light Weight http://darkjade68.files.wordpress.com/2012/01/white-feather.jpg

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Slanger Open Source Pusher Server Good for Dev

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em-websocket EventMachine based WebSocket Server

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HipChat

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HipChat ž Long Polling ž  XHR Polling ž  HTTP Streaming ž  Flash Socket ž  WebSocket

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BOSH Bidirectional-Streams Over Synchronous HTTP

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https://upload.wikimedia.org/wikipedia/de/thumb/e/ea/Logo_XMPP_Standards_Foundation.svg/500px-Logo_XMPP_Standards_Foundation.svg.png

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Easy to Scale

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Easy to Extend

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Works Everywhere http://i.cmpnet.com/bmighty/images/slideshows/20090121/slide1A.jpg

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Jabber Clients

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RubyBOSH

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stropheruby libstrophe.js

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Twitter Web

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Real Time is sugar http://images.sciencedaily.com/2008/12/081210090819-large.jpg

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Twitter Web ž  XHR Polling ž Long Polling ž  HTTP Streaming ž  Flash Socket ž  WebSocket

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http://www.dealz.ie/images/4347/original/simple.jpg

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Acceptable Smart interval

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Save Resource

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Twitter Streaming API

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Twitter Streaming API ž  HTTP Streaming ž  XHR Polling ž Long Polling ž  Flash Socket ž  WebSocket

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Low Overhead

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Low Latency

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API Friendly

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Rainbow Thin

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Rack::Stream

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Weibo

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Weibo Web ž  XHR Polling ž Long Polling ž  HTTP Streaming ž  Flash Socket ž  WebSocket

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Weibo IM ž Long Polling ž  XHR Polling ž  HTTP Streaming ž  Flash Socket ž  WebSocket

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Bayeux Protocol

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Faye

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Thank You!