I'm making another attempt to get a `deep_freeze` method added to Ruby. Core folks have rejected proposals for years, until Ractor came along and we got basically the same feature in `make_shareable`. But deep freezing should be its own feature. bugs.ruby-lang.org/issues/21665

Announcing ractor-shim, a new gem that reimplements Ractor on top of Thread & Queue: github.com/eregon/racto... This gem provides the full Ruby 3.5 Ractor API (Ractor::Port, Ractor#{join,value,monitor}, etc) on TruffleRuby, JRuby, and CRuby 2.7 to 3.4.

pkl-lang.org migrated from a ANTLR parser to manual parser, result: twice as fast. From Islon Scherer at the #GraalVM Community Summit

I wrote about some of my thoughts on the lessons we can learn from the RubyGems situation and how we can move forward. blog.peterzhu.ca/open-source-...

Can We Know Whether a Profiler is Accurate? Spoiler: yes we can! But it took us figuring out a way to work around the fundamental observer effect. stefan-marr.de/2025/10/can-... If you're at SPLASH, don't miss our talk at VMIL today and at OOPSLA on Saturday!

I tried to explain why I don't believe the recent accusations toward my former teammates, as well as how the Ruby and Rails Infra team at Shopify operates and why it can be trusted. byroot.github.io/opensource/r...

Every few months now I re-read this "Who Goes Nazi?" piece from 1941 and am blown away by how it captures the people we are dealing with 80 years later. harpers.org/archive/1941...

First Day: A New Chapter at the JKU It's Wednesday. Is this important? It's my first day in a new position. So, perhaps the real question is: what's going to be important to me from now on? stefan-marr.de/2025/10/firs...

Having met with both sides on the current RubyCentral/RubyGems situation, here's my take: - RubyCentral have managed this exceptionally poorly in many ways including removing literally the most active member of the RubyGems organisation by mistake who has declined to return

Hey, #ruby folks! I've been one of the #RubyGems maintainers for the last decade. Ruby Central has forcefully taken control of the RubyGems organization on GitHub, the `rubygems-update` and `bundler` gems on rubygems[.]org, and more. You can read the details here: pup-e.com/goodbye-ruby...

Running native extensions in parallel is a huge performance boost. Running a large internal Rails application, we saw performance roughly double. Very workload dependent, of course, but all of the major DB adapters are implemented as native extensions. We also added support for the blake3-rb gem.

GraalVM 25 released today! 🎉 My favorites this release👇

GraalVM 25 has a lot of great new features for native compilation: ✅ Better developer experience 👩‍💻 ✅ Simplified migration 🚀 ✅ Even faster and smaller executables with ML 🤖 ✅ Enhanced security 🛡️ ✅ New tooling 🛠️ Here are my favorite new @graalvm.org features:

TruffleRuby 25.0 is released! 🚀🎉 It can now run native extensions in parallel, just like Ruby code already ran in parallel in Threads on TruffleRuby! It also features many compatibility improvements and notably support for custom Digest algorithms. github.com/oracle/truff...

We have started the tedious and destined-to-always-lag-behind work of documenting #curl's view of the OpenSSL forks: https://github.com/curl/curl/wiki/OpenSSL-forks

Fighting LLM-generated slop with LLM, mmh I wonder how well that works: github.com/github/ai-mo...

Here we go! Had a great time learning about this with @tenderlove.dev bernsteinbear.com/blog/linear-...

How we made JSON.stringify more than twice as fast | Discussion

How we made JSON.stringify more than twice as fast https://lobste.rs/s/ueocpa ##browsers ##performance

Beyond performance work, I deprecated a bunch of APis in the JSON gem, and added others, so I figured it would be a good occasion to talk about API design: byroot.github.io/ruby/json/20...

This is excellent. In three minutes she explains how democracies become dictatorships. It's happened so many times, yet in each country, most people said, 'it can't happen here'

We ran a randomized controlled trial to see how much AI coding tools speed up experienced open-source developers. The results surprised us: Developers thought they were 20% faster with AI tools, but they were actually 19% slower when they had access to AI than when they didn't.

It's happened: the trimodal nature of software engineering compensation made it to the Economist! Disappointingly though, they did not link to the original article (they never do AFAIK), they redraw the image, and do not call it trimodal. Feels like "ripping off" my research, not gonna lie.

"jemalloc Postmortem" jasone.github.io/2025/06/12/j...

This is incredible

We are working on a new big project for @graalvm.org — Project Crema: github.com/oracle/graal.... It will lift Native Image's default closed-world assumption by allowing dynamic loading and execution of classes at run time. Stay tuned for updates!

Bridge Types xkcd.com/3097/

"It's a very bulky new neighbour but it will soon go away" 😆

No more Faster CPython at Microsoft 😶 www.linkedin.com/posts/mdboom...

TruffleRuby can now run C/native extensions in parallel, just like Ruby code runs in parallel in Threads on TruffleRuby! Native extensions need to opt in with rb_ext_ractor_safe(true) or rb_ext_thread_safe(true). Many gems already do that. See github.com/oracle/truff... for more details.

Thank you all for writing amazing posts so that I can read them and learn ❤️ bernsteinbear.com/blog/pl-writ...

"Masked security forces captured an opposition leader in the coastal province of New Jersey as regime officials continue their months-long crack-down against pro-democracy elements in the embattled United States. The arrest comes as the regime issued calls for summary detentions without trial."

TinyBits: A new schema-less binary serialization format. Fast to encode, fast to decode and generally smaller output than all other schema-less formats. Currently available as a preview for C and Ruby. A Python module is also in the works. oldmoe.blog/2025/05/05/s...

My thoughts on the new #Ruby namespaces (bugs.ruby-lang.org/issues/21311) in one sentence: Sub-interpreters are similar to Namespace + Ractor but with proper isolation, full compatibility, linear scaling and clear semantics. Compatibility is a key argument here, Ractor can't use most gems.

New blog post: “Contributions to ruby/spec” eregon.me/blog/2025/05...

My teammate Alexandre Terrasa wrote a great post about using inline RBS with Sorbet. We’ve been slowly adopting it at Shopify. And while we’re still improving Sorbet and all the supporting projects, it’s already working well! railsatscale.com/2025-04-23-r...

Can we ditch these fuckers who think we can’t have nice things? Public transit, clean environment, ending poverty, free education, schools without shootings, mother fing healthcare! Most aren’t even mysteries. The rest we could figure out together if these idiots weren’t so powerful

PhD Timeline xkcd.com/3081

"the president defied a Supreme Court ruling to return a man mistakenly sent to a gulag... and spoke of sending Americans to foreign concentration camps. This is the beginning of an American policy of state terror, and it has to be identified as such to be stopped" snyder.substack.com/p/state-terror

She is still in custody www.wbur.org/news/2025/04...

Video of a student in my town who wrote a political op-ed being grabbed off the street by government agents bsky.app/profile/pale...

#politics Ah Trump is so lame he already stopped his "great" (BS) tariffs, a week after he announced them. He clearly has not the slightest idea what he is doing (unsurprising for a puppet). Such a brainless bully.

Tariffs xkcd.com/3073

Probably the most impressive and exciting talk I have seen in years! Congrats to @fniephaus.com and Patrick Ziegler for their #wasmio presentation and work on @graalvm.org starting to compile Java applications to WasmGC. Kudos to @thomaswue.dev too.

Our "javac on #WebAssembly" demo (and code!) for #WasmIO25 is up on GitHub in case you want to play with the new Wasm backend for @graalvm.org! 🚀 More details to follow soon! graalvm.github.io/graalvm-demo...

They just deported the UK Subs.

Le Monde reporting that a French scientist traveling to Houston to attend a conference was denied entry to US after a search of his phone & computer revealed messages critical of Trump's science cuts, "which [says CPB] conveyed hatred of Trump & could be qualified as terrorism". Computer confiscated