Real Time iOS apps with PubNub

Slides for a Santex Techmeetup at Lima. https://eventioz.pe/e/tech-meetup-realtime-ios-app-with-pubnub

Transcript

1. REAL-TIME iOS APPS WITH
   

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2. who am I ?
   

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3. JOSE TORRES
   @coch3_
   B.S. in Software Engineering
   Currently making Software Products based on iOS platform
   Visual Arts passionate and French Bulldogs lover
   

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4. what is real-time
   communication
   anyway?
   

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5. Any live telecommunications that occur
   without transmission delays.
   Nearly instant with minimal latency.
   

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6. common scenario
   

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24. common workarounds
    

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30. WARNING TECHNICAL CONTENT
    

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31. PULL TECHNOLOGIES
    Initial request for data originates from the client, and then is
    responded to by the server.
    

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32. PUSH TECHNOLOGIES
    Request for a given transaction is initiated by publisher or
    central server.
    

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33. PUSH TECHNOLOGIES
    HTTP Server Push/HTTP Streaming, Long Polling/Polling, ...
    

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34. HALF DUPLEX
    Initial channel can send and receive, but not at the same time.
    

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35. BUT...
    All of these methods for providing real-time data involve HTTP
    request and response headers, which contain lots of additional,
    unnecessary header data and introduce latency.
    

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36. HTTP
    Simply put, HTTP wasn't designed for real-time.
    

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37. how do we achieve real-
    time then?
    

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38. WEB SOCKETS
    Allow a long-held single TCP socket connection to be
    established between the client and server which allows for bi-
    directional, full duplex, messages to be instantly distributed
    with little overhead resulting in a very low latency connection
    

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39. FULL DUPLEX
    Data can travel in both directions simultaneously. Bidirectional
    communications channel that operates through a single socket
    over the Web.
    

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40. CONTENT AS IT HAPPENS
    

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42. not at all
    

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43. WEB SOCKETS
    ARE NOT COMPLEX
    

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44. WEB SOCKETS
    ARE VERY COMPLEX
    

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45. FUNCTIONALITY = 25 %
    OPERATIONAL + SCALING = 75 %
    

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46. hopefully...
    

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55. case studies
    

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59. our experience
    

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61. DEMO
    

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62. crazycolors
    https://github.com/coch3/crazycolors
    

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63. + Information
    PubNub
    PubNub documentation
    PubNub websockets
    Why your app needs real-time ?
    Websockets
    iOS SDK
    PubNub best practices
    http://www.pubnub.com/
    http://cocoadocs.org/docsets/PubNub
    http://www.pubnub.com/blog/what-are-websockets
    http://venturebat.com/2013/04/05/why-your-app-needs-to-be-real-time/
    http://www.websocket.org/quantum.html
    http://www.pubnub.com/docs/objective-c/iOS/ios-sdk.html
    https://help.pubnub.com/entries/22271342-PubNub-Best-Practices
    

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64. THANKS!
    www.josetorrescardenas.com
    

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65. www.santexgroup.com
    

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