Joined November 2007
- Tweets 70,737
- Following 214
- Followers 14,452
- Likes 17,353
1,634 Photos and videos
Exciting demonstration of how fast JRuby can really be when you sweep away some of the metaprogramming layers of a typical Rails application... even when it already handles Rails HTML requests 2x faster than CRuby! Looking forward to seeing more about Roundhouse.
The Ruby JRuby Was Built to Run: intertwingly.net/blog/2026/0…
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And it's live! I'll show you the latest and greatest use cases for using JRuby with *real world* examples at @rubyconf 2026 in Las Vegas, July 14 at 3:30PM! Tell your friends!
rubyconf.org/schedule/
ALT Expand your Ruby Potential with JRuby Charles Nutter Breakout 2 - Charleston E-B JRuby is an implementation of Ruby 4.0 built on the Java Virtual Machine. For the past 20 years we've expanded the horizons of Ruby, bringing more jobs and more opportunities to Rubyists like you
Good news! I have been added to the RubyConf 2026 schedule to present JRuby and all the ways it lets you use Ruby when CRuby doesn't fit! I'm glad that the new @rubycentralorg values community and understands the importance of JRuby. Twenty years of JRuby...don't miss this talk!
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Good news! I have been added to the RubyConf 2026 schedule to present JRuby and all the ways it lets you use Ruby when CRuby doesn't fit! I'm glad that the new @rubycentralorg values community and understands the importance of JRuby. Twenty years of JRuby...don't miss this talk!
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Charles Oliver Nutter retweeted
Jun 8
JRuby 9.4.15.0 is released! This is the last regularly-scheduled release of JRuby 9.4.x and includes the last set of 9.4 fixes. Future releases will be done as needed for commercial JRuby users. Contact us if you need long-term JRuby 9.4 support.
jruby.org/2026/06/08/jruby-9…
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Charles Oliver Nutter retweeted
In addition to sponsoring #RubyKaigi2026 , our CTO, @headius, delivered the second-day keynote: "Twenty Years of JRuby".
What a great look back on the history of JRuby... and a look toward the future with the official announcement of the release of JRuby 10.1!
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"I didn't do this thing because it was easy... I did it because I thought it would be easy." - Radan Skorić at RubyConf Austria 😂
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In about an hour I'll do my first solo JRuby workshop at RubyConf Austria! I've used this opportunity to start assembling a complete JRuby tutorial, and I'd love to include your ideas.
Check it out: github.com/headius/tutorial
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I've started a project to collaboratively build templates for JRuby on Rails! So far there's just the bare minimum Rails 8.0 template I posted about earlier this week. Rails template experts are desperately needed, and anyone who has template ideas!
buff.ly/XJEOrWg
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A wild idea appears... what if you could use JBang with JRuby as a complete Rails command line... no JVM or JRuby installation required?
jbang rails@jruby new blog
cd blog
jbang rails@jruby generate scaffold ...
It just needs some tweaks to work. Interested?
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Exciting news! We have published 80.0.pre1 gems for JRuby's activerecord-jdbc-adapter for Rails 8.x, as well as a template you can use (thanks to @kbucek) to `rails new` a fresh app!
buff.ly/V6AeM5H
JRuby on Rails is BACK and we're excited to see what you do with it!
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We're getting ready to finally release Rails 8.0 and 8.1 adapters for ActiveRecord on JRuby! I've set up the CI build to start producing prerelease gems for anyone that wants to give it a try. Official release in the next week or so.
(Scroll to bottom): buff.ly/Wrc5XNe
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Call me paranoid, but I'm starting to see signs that there's folks actively sabotaging my work on JRuby... advising conferences not to accept my talks and projects to drop JRuby support. So disheartening to me after dedicating so many years to the Ruby and JRuby communities. 😢
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As part of automating JRuby releases, I'm trying to get the Install4J Windows installer to build and verify at a command line. Is there still value in a Windows installer without a Java runtimeincluded? Installing JRuby is basically just "install Java; unzip JRuby; add to PATH".
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Finally getting around to automating a bunch of manual JRuby pre-release verification tasks so they always run in CI. At this point, each commit will build a full release, unpack src and test build it, unpack bin and CRUD a simple rails app. More to come.
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Looks like it would be pretty easy to write a JVM backend for Spinel.
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It's crap like this that makes me not want to ever get anything at @Starbucks. I can't afford a bunch of ads in my notifications.
ALT Starbucks app notification settings on Android, with a single on off switch for both order status and promotional notifications
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It's still shocking to me that after 20 years working on JRuby I won't be speaking at RubyConf. The conference that got me started on this whole crazy journey doesn't think I'm worth a talk. Really disappointing.
I'll still be in Vegas to meet up, but I won't be at the event.
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My pre-breakfast project: adding FreeBSD and OpenBSD to JRuby's CI. FreeBSD largely works, but some specs fail that maybe never worked on FreeBSD to begin with. The OpenBSD image I'm using doesn't have JDK 21 in ports. It's a start... feel free to help!
buff.ly/ZEYxlE2
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Still deep in Japan withdrawal, now back in the US. It's a real shock to the system coming home to the American suburbs after seeing the beauty and efficiency of Japanese daily life. I'll just try to incorporate as much of what I learned into my routine.
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