Actors can rule your DDD world

on YouTube ↗50m

" summary

Builds BeerSender.net using .NET 6 and Akka.NET to implement event-sourced aggregates with CQRS: actors hold aggregates, persistence IDs must be unique, snapshots every ~100 events, and recover replays events. Architecture uses an aggregate manager, a command router (bottleneck mitigated by router pools and consistent hashing), projector actors for read models, and external subscribers. Claims throughput up to 4 million messages/sec on a laptop (50M/s cited for server JVM), and mentions Phobos telemetry (~€4k/year) for production visibility.

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" chapters (20)

1. 0:00Introduction
2. 0:11Speaker background
3. 0:44Agenda overview
4. 1:17The beer sender problem
5. 4:23DDD and CQRS integration
6. 6:02Event sourcing approach
7. 8:41Why Akka.NET
8. 11:30Actor basics
9. 12:59Message handling and throughput
10. 15:24Actor system orchestration
11. 17:51Actor hierarchies
12. 21:03Supervision strategies
13. 23:54Akka persistence
14. 27:14Persisting and snapshots
15. 29:23Aggregate implementation
16. 33:16Connecting aggregates
17. 36:13CQRS architecture
18. 39:23Routing and event bus
19. 42:39Future considerations and tools
20. 45:24Q&A and conclusion

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