Crystal 1.20.0 Is Released

#1

Post by sdogruyol » Fri, Apr 17, 2026, 2:14 PM UTC

Crystal 1.20.0 Is Released
crystal-lang.org

Re: Crystal 1.20.0 Is Released

#2

Post by sdogruyol » Fri, Apr 17, 2026, 2:14 PM UTC

[dead]

Re: Crystal 1.20.0 Is Released

#3

Post by yxhuvud » Fri, Apr 17, 2026, 2:23 PM UTC

Execution contexts closing in to being enabled by default is a big one. As is the io_uring based event loop that is also finally getting merged (even though that one is also hidden behind flags).

Re: Crystal 1.20.0 Is Released

#4

Post by samuell » Fri, Apr 17, 2026, 6:00 PM UTC

So the execution model is now even more similar to Go's one, with the M:N scheduling, IIUC?

I much like to hear that, as I found Crystal to provide pretty much exactly the same concurrency primitives as Go, but with a much nicer syntax, as I compared here:

https://livesys.se/posts/crystal-concurrency-easier-syntax-t...

Re: Crystal 1.20.0 Is Released

#5

Post by yxhuvud » Sat, Apr 18, 2026, 4:11 AM UTC

samuell wrote: post #4

So the execution model is now even more similar to Go's one, with the M:N scheduling, IIUC? I much like to hear that, as I found Crystal to provide pretty much exactly the same concurrency primitives as Go, but with a much nicer syntax, as I compared here: https://livesys.se/posts/crystal-concurrency-easier-syntax-t...

One big difference is that go hides all access to creating threads from the user, while execution contexts allow you to spin up dedicated thread(s) to solve a particular purpose.