Modern Concurrency Practices in Ruby

on YouTube ↗36m

" summary

Shows concrete tradeoffs and working code: mutexes cause deadlocks and lost increments on JRuby but wrapping the counter in the Atomic gem yields 2,000 increments reliably; futures via Celluloid run a sleep-3s web-call example that returns 500 without blocking; an actor tennis demo (Federer vs Rafa) runs as separate processes; STM-style transfers attempt 25 moves but validators force only 11 commits; channels/CSP via core.async and map/parking go blocks scale to thousands of operations; recommends concurrent-ruby for agents and practical fallbacks.

AI-written summary · about

" chapters (11)

1. 0:00Introduction
2. 0:52Agenda
3. 2:15What is concurrency
4. 3:29Mutexes
5. 6:31Atoms
6. 7:57Atomic
7. 14:42Actors
8. 23:10Agents
9. 25:41STM
10. 29:40Channels CSP
11. 33:47Closing Thoughts

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