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
5. Presence Statistics Title Files Cheat Detection User Generated Content
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
37. Programming Model • .NET Framework • Actor Interfaces • Promises • Actor References! • Turns • Persistence
39. Programming Model • .NET Framework • Actor Interfaces • Promises • Actor References • Turns! • Persistence
41. Reliability “Orleans manages all aspects of reliability automatically”
42. TOO!
44. TOO!
45. TOO!
46. Orleans & Halo
48. Halo 4: Statistics Service
49. Player Grain
50. Game Grain
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”
55. Programmer Productivity & Performance
56. Get Orleans https://github.com/dotnet/orleans! 
 
 
 

57. Questions @Caitie