Top Tweets for #jruby
InvokeDynamic is JRuby's switchboard. Dynamic calls get compiled to raw assembly, all inlined: Ruby into Java, Java into Ruby. Pure JVM magic. #JRuby #JVM #InvokeDynamic
Moving from CRuby to JRuby dropped one app from 20 extra large EC2 instances to 10 medium ones. Tens of thousands of dollars saved with a better runtime. #JRuby #EC2 #CloudCosts
JRuby is fully parallel on the JVM, which exposes thread-unsafe Ruby code. The fix was years of educating the Ruby community about thread-safe programming. #JRuby #Concurrency #Ruby
🔴 Live in TR516 Ruby Track
Sampo Kuokkanen — "Ruby on Ruby: ruby/spec, MRI Tests, and JRuby — Living on the Edge"
What it takes to run one spec suite across Ruby implementations, and what breaks when you live on the edge.
#COSCUP2026 #Ruby #JRuby
We use #JRuby for many of these reasons, and I found that at least for simpler stuff, LLMs can write decent code that uses Java features to deliver optimisation over CRuby.
This still rings true for us: https://t.co/zgpI7SteAS
Since I know this script, it does a lot of repetitive work, and benefits greatly from the Java JIT. Wonder if YJIT, etc would have helped. All the same, I'm with @santattech on this - #JRuby was a beast for this requirement.
Today prepare a 1.7GB CSV (arnd 10M rows) with a script provided. The jump from MRI to JRuby:
Ruby: 101s
JRuby: 38s (Nearly 3x faster!)
Python: 138s
Go: 12s
For heavy data processing and in Ruby ecosystem, JRuby is a beast.
#jruby #programing #ruby
Today prepare a 1.7GB CSV (arnd 10M rows) with a script provided. The jump from MRI to JRuby:
Ruby: 101s
JRuby: 38s (Nearly 3x faster!)
Python: 138s
Go: 12s
For heavy data processing and in Ruby ecosystem, JRuby is a beast.
#jruby #programing #ruby
🚀 Desde Barranquilla apoyando JConf Perú 2025 🇵🇪
Speaker confirmado → Luis Alfredo Porras Páez, Software Engineer en UnoSquare.
🔥 Talk: Java + Ruby = JRuby, lo mejor de dos mundos
📆 03 de diciembre | Lima
¡Una charla imperdible!
#JConfPerú2025 #Java #Ruby #JRuby
I need to run this again to see what might have changed but there is a guide from earlier that I wrote:
https://t.co/56EuanRuKa
But I am delighted that some of the niggling issues might have now been resolved.
#JRuby #Ruby #Programming
Turn your Ruby gem into an all-in-one executable jar file with JRuby:
* gem install warbler
* warble
* java -jar mygem.jar ...
I forgot how easy this is. Blog post coming.
https://t.co/DJDTcHLnZY
Rubyists, this one’s BIG! Meet Charles Nutter@headius
– the JRuby Guy 🎩
📷 Sept 17 | 📷@joshsoftware, Pune
A fireside chat on #JRuby, Ruby’s journey & the future of programming.
📷 RSVP 📷https://t.co/eR3BrvSXAU
#Ruby #RubyIndia #meetup #pune
As someone who really likes #JRuby (and supports it in some small way), I am excited that @headius is relentlessly spreading the word! Here's an old post on why we like to use JRuby that seems appropriate to share today - https://t.co/zgpI7SsGLk
#ruby #programming
All ears and all excited! 🎤
The JRuby legend Charles Nutter takes us through “JRuby: Do More with Ruby” live at #RubyConfIndia2025.
#RCI25 @headius
It's time for the last #RailsConf! Sadly, since my #JRuby talk was rejected, I won't be able to participate, so I need you to step up and represent. Let me know if you're there and I'll try to connect you with other JRubyists! Tell people our story and spread the word!
Matz is at #BalticRuby and so am I! Come learn how JRuby brings you next-gen Ruby performance, scaling, and opportunities at my talk tomorrow!#rubyfriends #jruby
Finally, started with installing #JRuby 10 & running Hello World before trying other things in the next few weeks. If you've wanted to experiment, here's a simple illustrated guide to get it running and the first steps:
https://t.co/exCsEGnGpT
#Ruby #Programming #RubyOnWindows
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