Reposted by The JRuby Project
New post: Warbled Sidekiq: Zero-install Executable for JVM
In my previous post, I showed how to use Warbler to package a simple tool as an executable jar. This post will demonstrate how to “warble” a larger project: the Sidekiq background job server!
buff.ly/ZEasNiu
In my previous post, I showed how to use Warbler to package a simple tool as an executable jar. This post will demonstrate how to “warble” a larger project: the Sidekiq background job server!
buff.ly/ZEasNiu
Warbled Sidekiq: Zero-install Executable for JVM
In my previous post, I showed how to use Warbler to package a simple image-processing tool as an executable jar. This post will demonstrate how to “warble” a larger project: the Sidekiq background…
blog.headius.com
October 23, 2025 at 5:01 PM
New post: Warbled Sidekiq: Zero-install Executable for JVM
In my previous post, I showed how to use Warbler to package a simple tool as an executable jar. This post will demonstrate how to “warble” a larger project: the Sidekiq background job server!
buff.ly/ZEasNiu
In my previous post, I showed how to use Warbler to package a simple tool as an executable jar. This post will demonstrate how to “warble” a larger project: the Sidekiq background job server!
buff.ly/ZEasNiu
Reposted by The JRuby Project
New post: "Packaging Ruby Apps with Warbler: Executable JAR Files"
Warbler is the JRuby ecosystem’s tool for packaging up Ruby apps with all dependencies in a single deployable file. We’ve just released an update, so let’s use Warbler to create all-in-one packaged Ruby apps!
buff.ly/ZdXcCop
Warbler is the JRuby ecosystem’s tool for packaging up Ruby apps with all dependencies in a single deployable file. We’ve just released an update, so let’s use Warbler to create all-in-one packaged Ruby apps!
buff.ly/ZdXcCop
Packaging Ruby Apps with Warbler: Executable JAR Files
Warbler is the JRuby ecosystem’s tool for packaging up Ruby apps with all dependencies in a single deployable file. We’ve just released an update, so let’s explore how to use Warbler to create…
blog.headius.com
October 21, 2025 at 5:42 PM
New post: "Packaging Ruby Apps with Warbler: Executable JAR Files"
Warbler is the JRuby ecosystem’s tool for packaging up Ruby apps with all dependencies in a single deployable file. We’ve just released an update, so let’s use Warbler to create all-in-one packaged Ruby apps!
buff.ly/ZdXcCop
Warbler is the JRuby ecosystem’s tool for packaging up Ruby apps with all dependencies in a single deployable file. We’ve just released an update, so let’s use Warbler to create all-in-one packaged Ruby apps!
buff.ly/ZdXcCop
Warbler 2.1.0 has been released! Warbler allows you to package JRuby applications (with obfuscation of code) as a single binary, either a .jar file you can run directly or a .war file you can deploy to any Java application server. Blog post coming!
rubygems.org/gems/warbler...
rubygems.org/gems/warbler...
warbler | RubyGems.org | your community gem host
Warbler is a gem to make a Java jar or war file out of any Ruby, Rails, or Rack application. Warbler provides a minimal, flexible, Ruby-like way to bundle up all of your application files for…
rubygems.org
October 16, 2025 at 10:05 AM
Warbler 2.1.0 has been released! Warbler allows you to package JRuby applications (with obfuscation of code) as a single binary, either a .jar file you can run directly or a .war file you can deploy to any Java application server. Blog post coming!
rubygems.org/gems/warbler...
rubygems.org/gems/warbler...
We have published Docker images for JRuby 9.4 and JRuby 10 on JDK 25! The -dev images are also updated to latest commits. Give them a try and let us know if there's any issues!
October 3, 2025 at 10:05 AM
We have published Docker images for JRuby 9.4 and JRuby 10 on JDK 25! The -dev images are also updated to latest commits. Give them a try and let us know if there's any issues!
Reposted by The JRuby Project
At the end of my post on JRuby and JDK 25 startup time features, I teased a bit of the unreleased improvements from Project Leyden. It turns out the latest commits improve startup time even more, so it seems worth posting a quick follow-up!
www.reddit.com/r/ruby/comme...
www.reddit.com/r/ruby/comme...
From the ruby community on Reddit: JRuby and Leyden: Even Better Startup
Posted by headius - 1 vote and 0 comments
www.reddit.com
September 26, 2025 at 4:38 PM
At the end of my post on JRuby and JDK 25 startup time features, I teased a bit of the unreleased improvements from Project Leyden. It turns out the latest commits improve startup time even more, so it seems worth posting a quick follow-up!
www.reddit.com/r/ruby/comme...
www.reddit.com/r/ruby/comme...
Reposted by The JRuby Project
New post: JRuby and JDK 25: Startup Time with AOTCache
Let's take a look at JRuby's startup time journey, all the way up to using JDK 25's AOTCache and Project Leyden features coming to a JDK near you soon.
blog.headius.com/2025/09/jrub...
Let's take a look at JRuby's startup time journey, all the way up to using JDK 25's AOTCache and Project Leyden features coming to a JDK near you soon.
blog.headius.com/2025/09/jrub...
JRuby and JDK 25: Startup Time with AOTCache
JDK 25 is the newest LTS release since JDK 21, and it ships with a gaggle of amazing VM-level features. This post will cover one of the most important improvements for command-line ecosystems like…
blog.headius.com
September 24, 2025 at 5:34 PM
New post: JRuby and JDK 25: Startup Time with AOTCache
Let's take a look at JRuby's startup time journey, all the way up to using JDK 25's AOTCache and Project Leyden features coming to a JDK near you soon.
blog.headius.com/2025/09/jrub...
Let's take a look at JRuby's startup time journey, all the way up to using JDK 25's AOTCache and Project Leyden features coming to a JDK near you soon.
blog.headius.com/2025/09/jrub...
JRuby 9.4.14.0 is released! We've updated a bunch of the standard library (including "cgi" to fix a couple of CVEs), fixed a few memory leaks and a bunch of compatibility issues, and generally stabilized things. Upgrading is recommended!
www.jruby.org/2025/08/28/j...
www.jruby.org/2025/08/28/j...
JRuby 9.4.14.0 Released — JRuby.org
The JRuby community is pleased to announce the release of JRuby 9.4.14.0.
www.jruby.org
August 28, 2025 at 9:06 PM
JRuby 9.4.14.0 is released! We've updated a bunch of the standard library (including "cgi" to fix a couple of CVEs), fixed a few memory leaks and a bunch of compatibility issues, and generally stabilized things. Upgrading is recommended!
www.jruby.org/2025/08/28/j...
www.jruby.org/2025/08/28/j...
JRuby 10.0.2.0 is released! This is a small release to fix an ArgumentError regression in JRuby 10.0.1.0 plus a few other small fixes. Recommended upgrade for all, but let us know if you run into any issues!
www.jruby.org/2025/08/07/j...
www.jruby.org/2025/08/07/j...
JRuby 10.0.2.0 Released — JRuby.org
The JRuby community is pleased to announce the release of JRuby 10.0.2.0.
www.jruby.org
August 7, 2025 at 8:41 PM
JRuby 10.0.2.0 is released! This is a small release to fix an ArgumentError regression in JRuby 10.0.1.0 plus a few other small fixes. Recommended upgrade for all, but let us know if you run into any issues!
www.jruby.org/2025/08/07/j...
www.jruby.org/2025/08/07/j...
We have just released JRuby 10.0.1.0, our first update to JRuby 10! There's dozens of patches including full support (finally) for Zeitwerk and a bunch of Ruby 3.4 language fixes. Upgrade today and let us know how it goes!
www.jruby.org/2025/07/17/j...
www.jruby.org/2025/07/17/j...
JRuby 10.0.1.0 Released — JRuby.org
The JRuby community is pleased to announce the release of JRuby 10.0.1.0.
www.jruby.org
July 17, 2025 at 7:04 PM
We have just released JRuby 10.0.1.0, our first update to JRuby 10! There's dozens of patches including full support (finally) for Zeitwerk and a bunch of Ruby 3.4 language fixes. Upgrade today and let us know how it goes!
www.jruby.org/2025/07/17/j...
www.jruby.org/2025/07/17/j...
We have released jruby-maven-plugins 3.0.6, which updates JRuby to 9.4.13.0 along with several other improvements. But more exciting: Warbler is BACK! We've updated it for latest JRuby and dependencies and it's running green in CI. Time for feature requests!
github.com/jruby/warble...
github.com/jruby/warble...
Updating and releasing with modern libs · Issue #558 · jruby/warbler
It's been too long since this library had an update and release. This issue will track the tasks necessary. I cloned and ran tests locally with JRuby 10, and a number of areas need improvement: Lot...
github.com
June 25, 2025 at 2:44 AM
We have released jruby-maven-plugins 3.0.6, which updates JRuby to 9.4.13.0 along with several other improvements. But more exciting: Warbler is BACK! We've updated it for latest JRuby and dependencies and it's running green in CI. Time for feature requests!
github.com/jruby/warble...
github.com/jruby/warble...
FYI: now that Ubuntu 20.04 is EOL, future releases of the JRuby Docker image will be based on Ubuntu 22.04.
This will take effect with releases 9.4.14.0 and 10.0.1.0, whenever they happen.
See github.com/docker-libra...
This will take effect with releases 9.4.14.0 and 10.0.1.0, whenever they happen.
See github.com/docker-libra...
Update Ubuntu 2025-06-01 by ROCKsBot · Pull Request #19167 · docker-library/official-images
Update Ubuntu to the latest published OCI tarballs as of 2025-06-01.
github.com
June 17, 2025 at 7:29 PM
FYI: now that Ubuntu 20.04 is EOL, future releases of the JRuby Docker image will be based on Ubuntu 22.04.
This will take effect with releases 9.4.14.0 and 10.0.1.0, whenever they happen.
See github.com/docker-libra...
This will take effect with releases 9.4.14.0 and 10.0.1.0, whenever they happen.
See github.com/docker-libra...
JRuby 9.4.13.0 is released! We have fixed several user issues, including a slow leak in Java interface implementation, a possible deadlock between JIT and main threads, and backported launcher improvements from JRuby 10!
www.jruby.org/2025/06/10/j...
www.jruby.org/2025/06/10/j...
JRuby 9.4.13.0 Released — JRuby.org
The JRuby community is pleased to announce the release of JRuby 9.4.13.0.
www.jruby.org
June 10, 2025 at 6:48 PM
JRuby 9.4.13.0 is released! We have fixed several user issues, including a slow leak in Java interface implementation, a possible deadlock between JIT and main threads, and backported launcher improvements from JRuby 10!
www.jruby.org/2025/06/10/j...
www.jruby.org/2025/06/10/j...
Reposted by The JRuby Project
this week on the unikernel application spotlight we check out @jrubyproject.bsky.social
www.youtube.com/watch?v=72wl... - real threads && jvm interop - congrats on 10.x release and 24 yrs! @headius.bsky.social
www.youtube.com/watch?v=72wl... - real threads && jvm interop - congrats on 10.x release and 24 yrs! @headius.bsky.social
[Unikernel Application Spotlight] JRuby
YouTube video by nanovms
www.youtube.com
June 8, 2025 at 4:39 PM
this week on the unikernel application spotlight we check out @jrubyproject.bsky.social
www.youtube.com/watch?v=72wl... - real threads && jvm interop - congrats on 10.x release and 24 yrs! @headius.bsky.social
www.youtube.com/watch?v=72wl... - real threads && jvm interop - congrats on 10.x release and 24 yrs! @headius.bsky.social
Security advisory: We have released jruby-openssl gem 0.15.4, jruby 10.0.0.1, and jruby 9.4.12.1 to address CVE-2025-46551, disabled hostname verification by default. We recommend that all users upgrade!
www.cve.org/CVERecord?id...
www.jruby.org/2025/05/07/j...
www.jruby.org/2025/05/07/j...
www.cve.org/CVERecord?id...
www.jruby.org/2025/05/07/j...
www.jruby.org/2025/05/07/j...
May 7, 2025 at 5:01 PM
Security advisory: We have released jruby-openssl gem 0.15.4, jruby 10.0.0.1, and jruby 9.4.12.1 to address CVE-2025-46551, disabled hostname verification by default. We recommend that all users upgrade!
www.cve.org/CVERecord?id...
www.jruby.org/2025/05/07/j...
www.jruby.org/2025/05/07/j...
www.cve.org/CVERecord?id...
www.jruby.org/2025/05/07/j...
www.jruby.org/2025/05/07/j...
Reposted by The JRuby Project
Seems like a few folks didn't think my 2D bar chart was "beautiful", so let's kick it up a notch with 3D, SVG, and PDF generation using the same JFreeChart family of libraries!
blog.headius.com/2025/05/3d-c...
blog.headius.com/2025/05/3d-c...
3D Charts and More with JRuby and JFreeChart
After playing with JFreeChart and JRuby and writing up a lovely blog post called “Beautiful Charts with JRuby and JFreeChart” it seems that some folks did not agree with my assessment of the charts…
blog.headius.com
May 1, 2025 at 3:42 PM
Seems like a few folks didn't think my 2D bar chart was "beautiful", so let's kick it up a notch with 3D, SVG, and PDF generation using the same JFreeChart family of libraries!
blog.headius.com/2025/05/3d-c...
blog.headius.com/2025/05/3d-c...
It's finally here! JRuby 10 has been released with support for Ruby 3.4 (including 3.2 and 3.3 updates as well). Minimum Java version has been bumped up to Java 21, allowing us to support modern JVM features. Check out the release notes and start migrating today!
www.jruby.org/2025/04/14/j...
www.jruby.org/2025/04/14/j...
JRuby 10.0.0.0 Released — JRuby.org
The JRuby community is pleased to announce the release of JRuby 10.0.0.0.
www.jruby.org
April 14, 2025 at 10:00 PM
It's finally here! JRuby 10 has been released with support for Ruby 3.4 (including 3.2 and 3.3 updates as well). Minimum Java version has been bumped up to Java 21, allowing us to support modern JVM features. Check out the release notes and start migrating today!
www.jruby.org/2025/04/14/j...
www.jruby.org/2025/04/14/j...
Reposted by The JRuby Project
It's almost time! I've just published my first post on JRuby 10, "Part 1: What's New". More posts will follow in the coming weeks, but JRuby 10 itself should be generally available before my RubyKaigi talk next week!
JRuby 10, Part 1: What's New
I am very excited to introduce you to JRuby 10, our biggest leap forward since “JRuby 9000” was released almost a decade ago.
buff.ly
April 9, 2025 at 3:52 PM
It's almost time! I've just published my first post on JRuby 10, "Part 1: What's New". More posts will follow in the coming weeks, but JRuby 10 itself should be generally available before my RubyKaigi talk next week!
Reposted by The JRuby Project
We have released jruby-launcher 2.0! This version eliminates the old C++ code in favor of two options:
* On Unix systems, the launcher will exec the already-present jruby.sh script.
* On Windows, we have a new Rust-based exe coming soon.
Let us know if you have any issues:
* On Unix systems, the launcher will exec the already-present jruby.sh script.
* On Windows, we have a new Rust-based exe coming soon.
Let us know if you have any issues:
GitHub - jruby/jruby-launcher: JRuby's native launcher executable
JRuby's native launcher executable. Contribute to jruby/jruby-launcher development by creating an account on GitHub.
buff.ly
April 8, 2025 at 10:59 PM
We have released jruby-launcher 2.0! This version eliminates the old C++ code in favor of two options:
* On Unix systems, the launcher will exec the already-present jruby.sh script.
* On Windows, we have a new Rust-based exe coming soon.
Let us know if you have any issues:
* On Unix systems, the launcher will exec the already-present jruby.sh script.
* On Windows, we have a new Rust-based exe coming soon.
Let us know if you have any issues:
JRuby 10 HEAD builds are now live in GitHub Actions setup-ruby and for any local Ruby installers that depend on jruby-dev-builder's jruby-head packages! Fingers crossed it doesn't cause too many problems, but let us know right away if something goes awry!
March 13, 2025 at 7:53 PM
JRuby 10 HEAD builds are now live in GitHub Actions setup-ruby and for any local Ruby installers that depend on jruby-dev-builder's jruby-head packages! Fingers crossed it doesn't cause too many problems, but let us know right away if something goes awry!
Reposted by The JRuby Project
I just took pdf-reader for a spin on v10-SNAPSHOT, all green first try github.com/yob/pdf-read...
Run tests on pre-release of jruby 10 by yob · Pull Request #552 · yob/pdf-reader
There's no jruby:10 image on docker hub yet, but seems like it's a work in progress at https://github.com/jruby/docker-jruby
I grabbed a Dockerfile from there and vendored it for now
github.com
March 5, 2025 at 5:59 AM
I just took pdf-reader for a spin on v10-SNAPSHOT, all green first try github.com/yob/pdf-read...
Reposted by The JRuby Project
Calling all Rubyists! We are looking for help verifying third-party libraries on JRuby 10! I've opened an issue to track that process, and provided links to snapshot JRuby builds you can use to verify your own code. Please help us verify JRuby 10!
Check third-party libraries against JRuby 10 · Issue #8675 · jruby/jruby
We are about to switch master and jruby-head to JRuby 10, but want to try to make sure that third-party libraries testing against jruby-head do not suddenly fail. To that end, we would like to repr...
buff.ly
March 4, 2025 at 9:05 PM
Calling all Rubyists! We are looking for help verifying third-party libraries on JRuby 10! I've opened an issue to track that process, and provided links to snapshot JRuby builds you can use to verify your own code. Please help us verify JRuby 10!
It's almost time! JRuby 10 is approaching release, and toward that end we will be switching JRuby master from the 9.4 line to the 10.0 line this week. The "jruby-head" build from GHA "setup-ruby" action will remain 9.4 for now, but it's time for you to start testing with JRuby 10!
March 3, 2025 at 10:35 PM
It's almost time! JRuby 10 is approaching release, and toward that end we will be switching JRuby master from the 9.4 line to the 10.0 line this week. The "jruby-head" build from GHA "setup-ruby" action will remain 9.4 for now, but it's time for you to start testing with JRuby 10!
Reposted by The JRuby Project
New post: Boosting JRuby Startup with AppCDS and AOT caching https://buff.ly/4jUEKJc
February 13, 2025 at 4:46 PM
New post: Boosting JRuby Startup with AppCDS and AOT caching https://buff.ly/4jUEKJc
JRuby 9.4.12.0 has been released with two important fixes: a thread-safety patch for recent Class#subclasses logic and an update for jar-dependencies to fix issues parsing Maven output on Java 9+. Let us know if you run into any new issues!
JRuby 9.4.12.0 Released — JRuby.org
The JRuby community is pleased to announce the release of JRuby 9.4.12.0.
buff.ly
February 11, 2025 at 9:28 PM
JRuby 9.4.12.0 has been released with two important fixes: a thread-safety patch for recent Class#subclasses logic and an update for jar-dependencies to fix issues parsing Maven output on Java 9+. Let us know if you run into any new issues!
JRuby 9.4.11.0 is released with two critical fixes for bugs in 9.4.10.0 and a handful of stdlib upgrades. We recommend all users update to 9.4.11.0 and skip the 9.4.10.0 release. Let us know if you have issues!
JRuby 9.4.11.0 Released — JRuby.org
The JRuby community is pleased to announce the release of JRuby 9.4.11.0.
buff.ly
January 29, 2025 at 8:40 PM
JRuby 9.4.11.0 is released with two critical fixes for bugs in 9.4.10.0 and a handful of stdlib upgrades. We recommend all users update to 9.4.11.0 and skip the 9.4.10.0 release. Let us know if you have issues!