[ksec]

Glad to read news on Ruby ZJIT development. I wonder if ZJIT is being used in production at Shopify yet?

[molf]

I have no idea; but I presume they don't, given that ZJIT today is still much slower than YJIT? [1]

[1]: https://rubybench.github.io

[kimos]

Used in production? Probably not yet. But likely tested in production on a small %. They’ve gotten practiced at using the Shopify Rails monolith as the biggest test suite and regression tests for Rails and Ruby.

[ksec]

Yes that is what I meant, should have worded it as tested in production.

Hopefully it is no longer experimental in Ruby 4.1.