Real time web with SignalR
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This document summarizes a presentation about ASP.NET SignalR, a framework for adding real-time web functionality to applications. The presentation discusses event-driven architecture and how SignalR supports it. It also covers scaling out SignalR applications across multiple servers and improving performance. The presenter is identified as Alessandro Melchiori, a software architect, and demos of SignalR functionality are included.
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These are also termed as BFF - Backend For Frontend
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In this talk I will share these patterns with you, including:
* Consume and Project (data decoupling)
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Heterogeneity in infrastructure
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A much better approach is for a client to make a single request to what’s known as an API gateway. An API gateway is a service which is the single entry-point for API requests into an application. It’s similar to the Facade pattern from object-oriented design. Like a facade, an API gateway encapsulates the application’s internal architecture and provides an API to its clients. It might also have other responsibilities, such as authentication, monitoring, and rate limiting.
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http://jeffbullas.com
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Astute Business Solutions | Oracle Cloud Partner |
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Overview
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Real time web with SignalR
- 1. WEB06 WEB IN REAL TIME CON ASP.NET SIGNALR #CDays14 – Milano 25, 26 e 27 Febbraio 2014
- 2. Grazie a Sponsor #CDays14 – Milano 25, 26 e 27 Febbraio 2014
- 3. Agenda • What / Why / When • Event-driven architecture and SignlaR • Scale-out SignalR • Performance tips #CDays14 – Milano 25, 26 e 27 Febbraio 2014
- 4. About me Alessandro Melchiori Software architect @ codiceplastico @amelchiori http://melkio.blog.codiceplastico.com #CDays14 – Milano 25, 26 e 27 Febbraio 2014
- 5. demo SignalR.Intro #CDays14 – Milano 25, 26 e 27 Febbraio 2014
- 6. #CDays14 – Milano 25, 26 e 27 Febbraio 2014 Domain Model Service Layer Presentation Layer Da qui… Storage
- 7. Domain Model Service Layer Presentation Layer …a qui Write storage Read storage #CDays14 – Milano 25, 26 e 27 Febbraio 2014
- 8. SignalR core architecture: pub/sub publisher message bus message cache client client client client client
- 9. Pattern 1. Server broadcast • Low rate broadcast of the same payload to all clients • One message bus send maps to many users (fan out) • More clients don’t increase message bus traffic
- 10. Pattern 2. Server push • Low rate broadcast of the unique payload to each client • One message bus send maps to one user (no fan out) • More clients means more message bus traffic
- 11. Pattern 3. User event driven • Broadcast on client actions • One message bus send maps to many users (fan out) • More clients means more message bus traffic
- 12. Pattern 4. High frequency real-time • Fixed high rate broadcast from servers and clients • One message bus send maps to one user (no fan out) • More clients means more message bus traffic
- 13. demo Event-driven architecture & SignalR #CDays14 – Milano 25, 26 e 27 Febbraio 2014
- 14. Remember… Have your app do as little as possible. If you do nothing, you can scale infinitely. Scott Hanselman #CDays14 – Milano 25, 26 e 27 Febbraio 2014
- 15. Scale-out issues: message delivery
- 16. Scale-out issues: client transience server 1 server 2
- 17. Scale-out issues: client distribution server 1 server 2
- 18. Scale-out SignalR • SQL Server, Redis & Windows Azure Service Bus • Great for the server broadcast load pattern • Limited for other scenarios Every message goes to every server, so as traffic increases you’re limited by how fast any one web server can pull messages off of the backplane Backplanes are *much* slower than single-server performance
- 19. Scale-out provider architecture backplane web nodes clients
- 20. demo Scale-out SignalR #CDays14 – Milano 25, 26 e 27 Febbraio 2014
- 21. Q&A Tutto il materiale di questa sessione su http://www.communitydays.it/ Lascia il feedback su questa sessione, potrai essere estratto per i nostri premi! Seguici su Twitter @CommunityDaysIT Facebook http://facebook.com/cdaysit #CDays14 #CDays14 – Milano 25, 26 e 27 Febbraio 2014
Editor's Notes
- Slide da mostrare prima di iniziare la sessione – non rimuovere!
- Ultima slide, obbligatoria