Parallel Processing With Ruby
summary
Compares Ruby MRI (GIL/green threads) with JRuby (native parallel threads), demonstrates a real array.push race where five threads should append 5,000 items but concurrent implementations can lose updates, shows that mutex.synchronize fixes it, and explains fibers, the celluloid actor model and why Sidekiq moved away from Celluloid. Mentions a Ruby 3 “Guild” proposal to allow multiple guilds (threads groups) and a claimed ~3x speed target versus Ruby 2.
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chapters (8)
- 0:00Introduction
- 3:15Parallel Processing vs Concurrency
- 14:04Are You Safe With Ruby
- 14:39Use Mutex
- 16:13Guild Implementation
- 18:03Fiber
- 18:34Celluloid
- 20:13Questions
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