PWLSF#12 => Caitie McCaffrey on Orleans: A Framework for Cloud Computing

Caitie McCaffrey stops by and talks about the Orleans: Distributed Virtual Actors for Programmability and Scalability paper by Bernstein, Bykov, Geller, Kliot, and Thelin.

Orleans is a runtime and programming model for building scalable distributed systems, based on the actor model. The Orleans programming model introduces the abstraction of Virtual Actors. Orleans allows applications to obtain high performance, reliability, and scalability. This technology was developed by the eXtreme Computing Group at Microsoft Research and was a core component of the Azure Services that supported that powered Halo 4, the award winning video game.

Caitie's Bio

Caitie McCaffrey is a Backend Brat, Distributed Systems Diva, and Tech Lover. Her focus is on Web Services, Distributed Systems, and Big Data. She is passionate about creating fun, social, and collaborative entertainment experiences. Caitie has a degree in Computer Science from Cornell University, and has worked on several video games including Gears of War 2, Gears of War 3, and most recently Halo 4. She currently is working at HBO on the HBO Go services. She maintains a blog at CaitieM.com and frequently discusses technology and entertainment on Twitter @CaitieM20

The video of this talk is up!! https://www.youtube.com/watch?v=gY8zKZUazvo

Transcript

1. Orleans: Distributed Virtual Actors for Programmability and Scalability Papers We Love #12! San Francisco! February 19th 2015!
2. Caitie McCaffrey! Distributed Systems Engineer @Caitie CaitieM.com
3. Philip A. Bernstein, Sergey Bykov, Alan Geller, Gabriel Kliot, Jorgen Thelin Orleans: Distributed Virtual Actors for Programmability and Scalability eXtreme Computing Group MSR
5. Orleans: a Framework for Cloud Computing Orleans: Cloud Computing for Everyone Orleans: Distributed Virtual Actors for Programmability & Scalability November 30th 2010 October 2011 March 2014
6. The Actor Model A framework & basis for reasoning about concurrency A Universal Modular Actor Formalism for Artificial Intelligence ! Carl Hewitt, Peter Bishop, Richard Steiger (1973)
7. Actor Actions • Send a Message • Create New Actors • Designate the Behavior to be used on the next Message
8. Orleans “Orleans is a runtime and programming model for building distributed systems, based on the actor model”
9. Virtual Actors “An Orleans actor always exists, virtually. It cannot be explicitly created or destroyed”
10. Virtual Actors • Perpetual Existence • Automatic Instantiation • Location Transparency • Automatic Scale out
11. Runtime • Messaging • Hosting • Execution
12. Programming Model • .NET Framework! • Actor Interfaces! • Promises! • Actor References • Turns • Persistence
14. Programming Model • .NET Framework • Actor Interfaces • Promises • Actor References! • Turns • Persistence
16. Programming Model • .NET Framework • Actor Interfaces • Promises • Actor References • Turns! • Persistence
18. Reliability “Orleans manages all aspects of reliability automatically”
19. TOO!
21. TOO!
22. TOO!
23. Isolation
24. Messaging Guarantees
25. Let’s Talk About CAP
26. Orleans is AP
27. Halo 4: Statistics Service
29. Halo 4: Presence Service
31. Performance & Scalability
32. “Orleans applications run at very high CPU Utilization. We have run load tests with full saturation of 25 servers for many days at 90%+ CPU utilization without any instability”
35. Conclusion • Virtual Actors • AP Actor Activation • Developer Productivity
36. Get Orleans https://github.com/dotnet/orleans! 
 
 
 

37. Discussion