Async Ruby
A ⚡ talk about async in Ruby 3.x
LIVE CODING TIME
Async Ruby
A ⚡ talk about async in Ruby 3.x
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LIVE CODING TIME
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What just happened?
Q: Isn’t this just threads?
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FIBERS
With some Fiber Scheduler
Q: Could I have just used threads for this workload?
"It Depends - Lots of Devs."
Do you like race conditions and not having semaphores?
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Threads vs. Fiber Scheduler
- Thread = CPU controlled execution
- Fiber Scheduler = VM controlled execution
Source: https://blog.saeloun.com/2022/03/01/ruby-fibers-101.html
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LIVE DEMO TIME
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Ractors
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LIVE RACTOR TIME
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Summary
- Fibers can help with concurrency issues
- Async gem is very cool to help with Fibers
- Ractors even cooler - EXPERIMENTAL still
- This talk missed these important things:
- Failure modes?
- Real life use cases (apart from scripting)
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A’s to your Q’s
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