YouTube video by Tenderlove's Cool Stuff

Object allocations from the garbage collector are now inlined in ZJIT.

Introducing Rubydex — a portable static analysis engine powering Ruby LSP, Tapioca, Packwerk, and more. One foundation, compounding benefits for the whole ecosystem.

RubyKaigi 2026, #rubykaigi

ARE YOU READY? Join the fully-remote rocketship. Find your next quest to make commerce better for everyone. Unlimited growth. Crafters and hard workers only. Apply within.

This commit implements moving Immix in MMTk, which allows objects to move in the GC. The performance of this implementation is not yet amazing. It is very similar to non-moving Immix in many of the...

Ruby’s documentation gets a fresh look. Starting with RDoc 7.0.0, Aliki is the new default theme—bringing dark mode, better search, and a modern layout to docs.ruby-lang.org and gem documentation.

I’ve been meaning to write a post about my perspective on Open Source and corporate entities. I already got the rough outline of it; however, I’m suffering from writer’s block, but more importantly, t...

As I mentioned at the start of my Optimizing Ruby’s JSON series of posts, performance isn’t why I candidated to be the new gem’s maintainer.

Description Reproduction steps Install the latest jruby (e.g. rbenv install jruby-9.4.8.0) Try to install the latest ruby-lsp: gem install ruby-lsp It will fail building the native extension Code s...

In a previous post about ractors, I explained why I think it’s really unlikely you’d ever be able to run an entire application inside a ractor, but that they could still be situationally very useful t...

Add Model Context Protocol (MCP) support to Ruby LSP This PR adds support for the Model Context Protocol (MCP), enabling AI assistants to programmatically access Ruby project indexes and file conte...

How Sorbet and RBS can work together to elevate your Ruby development experience

Introduce EnforcedStyleForMultiline "diff_comma" [Fix #9935] The "diff_comma" enforced style omits the trailing comma unless the final item of the hash/array literal is at the e...

I want to write a post about Pitchfork, explaining where it comes from, why it is like it is, and how I see its future. But before I can get to that, I think I need to share my mental model on a few t...

What's Changed ✨ Enhancements Add ri as an alias to the show_doc command by @st0012 in #1054 Add copy command by @Prajjwal in #1044 Show a quick preview of inspect result before pager launch by @t...

When the topic of Rails performance comes up, it is commonplace to hear that the database is the bottleneck, so Rails applications are IO-bound anyway, hence Ruby performance doesn’t matter that much,...

After 15 years at Buildkite, Culture Amp and Icelab, I’m available for hire! I’m an effective, versatile and compassionate technical leader, and an accomplished Rubyist. I’m looking for remote Princi...

We talk about Ruby, Rails, JavaScript, and everything in between. From tiny tips to bigger challenges we take on 3 questions a show; What are you working on? What's blocking you? What's something cool...