An Actor Model in Go
summary
An actor style is implemented as a struct plus a goroutine that pulls work from a chan mailbox and executes closures so functions-as-messages are sent, queued and run single-threaded. Used inside Weave Net for a connection maker and an IP address manager, it runs in production for two years and simplifies code by avoiding fine-grained mutexes. Channels are sized pragmatically (tests at size 1, prod usually 16-sized channel) and the model is simpler but no locks but not deadlock-proof—full queues can still deadlock across goroutines or machines.
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chapters (13)
- 0:00Introduction
- 1:37Actor Model
- 2:09Actors for Concurrent Systems
- 2:56Bryans Background
- 4:10Connection Maker
- 5:48Properties
- 7:16Actor
- 8:23Concurrency
- 9:08Go Routine
- 15:51Example
- 20:50Un unbounded channels
- 25:31Cons
- 30:18Conclusion
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