Qcon London 2015: Building the Halo 4 Services with Orleans

Transcript

1. Building the Halo 4 Services with Orleans Qcon London 2015

2. Caitie McCaffrey! Distributed Systems Engineer @Caitie CaitieM.com

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5. Presence Statistics Title Files Cheat Detection User Generated Content

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10. Halo:CE - 6.43 million Halo 2 - 8.49 million Halo

    3 - 11.87 million Halo 3: ODST - 6.22 million Halo Reach - 9.52 million

11. $220 million in sales ! 1 million players online Day

    One

12. $300 million in sales ! 4 million players online !

    31.4 million hours Week One

13. 11.6 million players ! 1.5 billion games ! 270 million

    hours Overall

14. Architectural Challenges

15. Load Patterns Load Patterns

16. Azure Worker Roles Azure Table Azure Blob Azure Service Bus

17. Always Available

18. Low Latency & High Concurrency

19. Stateless 3 Tier ! Architecture

20. Latency Issues

21. Add A Cache

22. Concurrency 
 Issues

23. Data Locality

24. 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)

25. Send A Message Create a New Actor Change Internal State

26. State-full Services

27. Philip A. Bernstein, Sergey Bykov, Alan Geller, Gabriel Kliot, Jorgen

    Thelin Orleans: Distributed Virtual Actors for Programmability and Scalability eXtreme Computing Group MSR

28. “Orleans is a runtime and programming model for building distributed

    systems, based on the actor model”

29. Virtual Actors “An Orleans actor always exists, virtually. It cannot

    be explicitly created or destroyed”

30. Virtual Actors • Perpetual Existence • Automatic Instantiation • Location

    Transparency • Automatic Scale out

31. Runtime • Messaging • Hosting • Execution

32. Messaging Guarantees

33. Let’s Talk About CAP

34. Orleans is AP

35. Programming Model • .NET Framework! • Actor Interfaces! • Promises!

    • Actor References • Turns • Persistence
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37. Programming Model • .NET Framework • Actor Interfaces • Promises

    • Actor References! • Turns • Persistence
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39. Programming Model • .NET Framework • Actor Interfaces • Promises

    • Actor References • Turns! • Persistence
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41. Reliability “Orleans manages all aspects of reliability automatically”

42. TOO!

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44. TOO!

45. TOO!

46. Orleans & Halo

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48. Halo 4: Statistics Service

49. Player Grain

50. Game Grain

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52. Performance & Scalability

53. “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”
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55. Programmer Productivity & Performance

56. Get Orleans https://github.com/dotnet/orleans! 
 
 
 


57. Questions @Caitie