Ruby Facets

Intro Welcome to Ruby Facets. I'm Olivier Lacan and every week on this show I'll talk to you about a few interesting things going on in the Ruby community. Concurrency in Ruby 3 with Guilds Earlier this month Koichi Sasada presented his proposal for a new concurrency model in Ruby 3 called Guilds. His goals are to retain compatibility with Ruby 2, allow for parallelism, reconsider global locks that prevent parallel execution, try to allow fast object sharing, and provide special structures to share mutable objects. Since I spent the better part of this week trying to understand how Guilds may work in order to explain them properly, I've actually published a blog post titled Concurrency in Ruby 3 with Guilds just yesterday. I'll give you the cliffs notes and you can catch up with that post if anything sounds confusing. There are already two ways to attempt concurrency in Ruby: Threads and Fibers. Although you create Threads yourself, their execution is scheduled by the operating system, Fibers however can be s