Latest updates for Ryujit

Fresh curated links around RyuJIT are collected here so marketers can spot useful updates and turn timely ideas into posts faster.

Recent items include:

  • Ruby 4.0: ZJIT, Ruby Box, and Ractors
  • ZJIT is now as fast as YJIT
  • What a JIT Can't Know

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Recent curated links from global sources. Generate one free draft from any story, then use SocialBu to schedule and refine your content calendar.

fastruby.io /1 month ago

Ruby 4.0: ZJIT, Ruby Box, and Ractors

Originally appeared on The Rails Tech Debt Blog.Ruby 4.0 was released on December 25, 2025, and three features get cited most often when people talk about it: ZJIT, Ruby Box, and a...

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railsatscale.com /2 weeks ago

ZJIT is now as fast as YJIT

Originally appeared on Rails at Scale. After some infrastructure deployment shenanigans, we deployed some regions of storefront renderer (SFR) running on ZJIT. We have seen some p...

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intertwingly.net /1 week ago

What a JIT Can't Know

Originally appeared on Sam Ruby.In 2023 Shopify's Rails at Scale team turned Lobsters into a Rails benchmark for YJIT: a real application, real routes, a fake-data database, SQLite...

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rubyweekly.com /1 month ago

ZJIT can now inline GC allocations

Originally appeared on Ruby Weekly. #​815 — September 3, 2026 Read on the Web Ruby Weekly ZJIT 🤝 GC: Inli...

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blog.peterzhu.ca /1 month ago

ZJIT рџ¤ќ GC: Inlining GC Fastpath in ZJIT

Originally appeared on Peter Zhu.Object allocations from the garbage collector are now inlined in ZJIT.

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railsatscale.com /3 days ago

Rails is a JIT compiler

Originally appeared on Rails at Scale. The title was bait to get you to open this article. But fear not! We will be generating code at run-time today. (See the PR for a sneak peek...

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railsatscale.com /1 month ago

ZJIT рџ¤ќ GC: Inlining GC Fastpath in ZJIT

Originally appeared on Rails at Scale. It’s been 8 years since the first just-in-time compiler was introduced in Ruby. However, throughout this time, the garbage collector has bee...

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ruby-lang.org /1 week ago

Ruby 4.1.0-preview1 Released

Originally appeared on Ruby News. We are pleased to announce the release of Ruby 4.1.0-preview1. Ruby 4.1 introduces Ractor local GC, Windows support of YJIT, autoload_relative, an...

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