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Your PresenterShravan Kumar KasagoniSoftware Engineer @ Thomson ReutersMicrosoft MVP – ASP.NET / IIS | MCPMicrosoft User G...
AgendaIntroduction to real-time appsWhat is SignalR?DemosSignalR ComponentsScaleout SignalR
Real-time Application?Real-time functionality is the ability to haveserver code push content to connected clientsinstantly...
Why Real-time?Users want the latest info,NOW!
Show Me Some Examples Twitter, Facebook, Mail - live searches/updates Stock streamers Auctions Interactive games Live...
How to build real-time web apps?
HTTP is an old beast…Never designed for real-timecommunications Web is all about request-response Web is stateless
Periodic polling Poll from time to time using Ajax Delay in communication due to polling interval Wastes bandwidth & la...
Long polling Poll but doesn’t respond until theres data Poll again after data received or after the connectiontimes out...
Forever Frame Server tells client that response is chucked Client keeps connection open until server closes it Server p...
HTML5 Web sockets Extension to HTTP Provides raw sockets over HTTP Full-duplex Traverses proxies Its still a draft N...
too many options
What is SignalR?An open-source series of libraries that provide anabstraction around persistent HTTP connectionsSignalR ma...
SignalR on Old Servers or Clients
SignalR on New Servers and Clients
Basically…
What does SignalR do? Client to Server Persistent connectionover HTTP Easily build multi-user, real-time webapplications...
SignalR FallbackLongPollingForeverFrameServerSentEventsWebSockets
http://shootr.signalr.nethttp://firework.cloudapp.net
CLIENTSBACKPLANESHOSTS
Three backplanes Windows Azure Service Bus SQL Server Redis
BackplaneLoad balancing via a common transport mechanism
Referenceshttp://www.asp.net/signalr/http://signalr.net/https://github.com/SignalR/SignalR/wiki
Keep in touchhttp://theshravan.net@techieshravanshravan.kasagoni@outlook.com
Building Realtime Web Applications With ASP.NET SignalR
Building Realtime Web Applications With ASP.NET SignalR
Building Realtime Web Applications With ASP.NET SignalR
Building Realtime Web Applications With ASP.NET SignalR
Building Realtime Web Applications With ASP.NET SignalR
Building Realtime Web Applications With ASP.NET SignalR
Building Realtime Web Applications With ASP.NET SignalR
Building Realtime Web Applications With ASP.NET SignalR
Building Realtime Web Applications With ASP.NET SignalR
Building Realtime Web Applications With ASP.NET SignalR
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Building Realtime Web Applications With ASP.NET SignalR

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Transcript of "Building Realtime Web Applications With ASP.NET SignalR"

  1. 1. Your PresenterShravan Kumar KasagoniSoftware Engineer @ Thomson ReutersMicrosoft MVP – ASP.NET / IIS | MCPMicrosoft User Group Hyderabadhttp://theshravan.net@techieshravan
  2. 2. AgendaIntroduction to real-time appsWhat is SignalR?DemosSignalR ComponentsScaleout SignalR
  3. 3. Real-time Application?Real-time functionality is the ability to haveserver code push content to connected clientsinstantly as it becomes available, rather thanhaving the server wait for a client to request newdata.
  4. 4. Why Real-time?Users want the latest info,NOW!
  5. 5. Show Me Some Examples Twitter, Facebook, Mail - live searches/updates Stock streamers Auctions Interactive games Live Scores Collaborative apps (google docs, office webapps) Live user analytics (live graphs)
  6. 6. How to build real-time web apps?
  7. 7. HTTP is an old beast…Never designed for real-timecommunications Web is all about request-response Web is stateless
  8. 8. Periodic polling Poll from time to time using Ajax Delay in communication due to polling interval Wastes bandwidth & latencyServerClientPolling interval
  9. 9. Long polling Poll but doesn’t respond until theres data Poll again after data received or after the connectiontimes out Consumes server & threads & connection resourcesServerClient
  10. 10. Forever Frame Server tells client that response is chucked Client keeps connection open until server closes it Server pushed data to the client followed by 0 Consumes server threadsServerClient
  11. 11. HTML5 Web sockets Extension to HTTP Provides raw sockets over HTTP Full-duplex Traverses proxies Its still a draft Not every proxy server supports it Not every web server supports it Not every browser supports it They are raw sockets!
  12. 12. too many options
  13. 13. What is SignalR?An open-source series of libraries that provide anabstraction around persistent HTTP connectionsSignalR makes real-time HTTP so easyit seems like magic that it works[In English, please]
  14. 14. SignalR on Old Servers or Clients
  15. 15. SignalR on New Servers and Clients
  16. 16. Basically…
  17. 17. What does SignalR do? Client to Server Persistent connectionover HTTP Easily build multi-user, real-time webapplications Auto-negotiates transport
  18. 18. SignalR FallbackLongPollingForeverFrameServerSentEventsWebSockets
  19. 19. http://shootr.signalr.nethttp://firework.cloudapp.net
  20. 20. CLIENTSBACKPLANESHOSTS
  21. 21. Three backplanes Windows Azure Service Bus SQL Server Redis
  22. 22. BackplaneLoad balancing via a common transport mechanism
  23. 23. Referenceshttp://www.asp.net/signalr/http://signalr.net/https://github.com/SignalR/SignalR/wiki
  24. 24. Keep in touchhttp://theshravan.net@techieshravanshravan.kasagoni@outlook.com

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