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JRuby 1.2 with 1.9.1 Support Due in Feb 2009

Charles Nutter of the JRuby team has announced that after today's release of Ruby 1.9.1, the JRuby team will be working to release JRuby 1.2 with 1.9.1 compatibility in late February.

Interview with the JRuby Cookbook's Authors

Henry Liu and Justin Edelson wrote JRuby Cookbook, a new book full of useful JRuby tips and "recipes" and available from O'Reilly. Timothy M O'Brien spoke with Henry and Justin about the book and the JRuby ecosystem in general.

The Closet JRubyists

JRuby 1.1.5 Released

JRuby 1.1.5 is the fifth point release of JRuby 1.1. The fixes in this release are primarily obvious compatibility problems and performance enhancements.

JRuby and Terracotta, JMagLev?

Avi Bryant's demo for MagLev (from the last RailsConf) being reproduced with JRuby, Nailgun and Terracotta.

New Book: JRuby Cookbook

O'Reilly continues its dominance in the programming book scene with "JRuby Cookbook" by Justin Edelson and Henry Liu which offers practical solutions for using the JRuby, the Java implementation of the Ruby language.

JRuby 1.1.4 Released

The JRuby team just released version 1.1.4, which resolved 72 issues since the 1.1.3 release. 1.1.4 deals with compatibility issues, enhances performance (2-20x speed up of most features - calls, construction, arrays), and takes steps toward Ruby 1.9 compatibility (enabled with –1.9 flag). Read the full details about the release and then download JRuby 1.1.4. Happy coding!

How to Deploy A Rails App on JRuby In 15 Minutes

Charles Nutter takes us through the process of deploying a Rails app on JRuby in just 15 minutes.

Charles Nutter on JRuby's Future

Charles Nutter takes us on an interesting ride through what he's been working on and where JRuby is headed next. A must-read.

JRuby 1.1.3 Released

JRuby 1.1.3 was released on July 19th. This release includes "primarily obvious compatibility problems and performance enhancements." The highlights of this release, per the official post by Thomas Enebo are:

- RubyGems 1.2
- Greatly improved interpreter performance
- jrubyc compiler usability improvements and bug fixes
- Reduced memory usage and object churn
- Dozens of IO-related and core class RubySpec fixes + reduced memory for IO
- ThreadGroup fixes to resolve Mongrel "dead thread" issues
- New options/properties for tweaking JIT, thread pooling, and more
- Block invocation performance improvements
- Much faster Time performance
- Much better support for --debug
- Mentioning that context classloader fix would be nice (since it quite user visible, and many users seen/asked for it). JRUBY-2495
- 82 issues resolved since JRuby 1.1.2