[endorphine]

It would be useful to explain why ZJIT exists given that there's already YJIT.

Also, what's the long-term plan for YJIT.

[riffraff]

ZJIT exists because it's a more traditional design and there's hope more people will have a easier time contributing[0]. Given that, it seems YJIT will become unnecessary if ZJIT succeeds.

0: https://railsatscale.com/2025-05-14-merge-zjit/

[baggy_trough]

The explanation is in the second paragraph of the article.

[fourseventy]

I just upgraded my prod apps to run on YJIT so I'm annoyed at this announcement. Feels like javascript-esque runtime churn

[tekknolagi]

Earnestly: why are you annoyed? I tried to make it clear that you don't have to make any changes. If you want, you can try ZJIT (which should not be anything other than a one character change), but you don't have to.