JRuby-Prof is a new, low overhead profiler for JRuby which, unlike plain Java profilers, will generate clear, Ruby-specific reports. A new feature in JRuby is JRuby::Synchronized, a module that, when extended, will make all methods of a class synchronized.
The first beta of Rails 3 is available. Rails 3 is a major rewrite of the codebase bringing with it stable APIs and design decisions inspired by Merb, cleaner internals, performance improvements and much more. InfoQ takes a look at the changes in Rails 3, and on which Ruby implementations it runs.
SapphireSteel Software, the developers of the Visual Studio based Ruby in Steel IDE have just released version 1.5. Among many improvements, they also dropped support for IronRuby.
JRuby's Charles Nutter is making Maven artifacts installable as RubyGems. An alternative to using Maven is JavaGems, built on RubyGems, Bundler and Gemcutter to make it easier to install libraries for Scala, Clojure and other JVM languages. Also, JRuby gets the ability to generate real Java classes.
A new intermediate representation (IR) for JRuby code enables many optimizations and could bring the next performance boost. InfoQ talked to Subbu Sastry who works on the IR.
Charles Nutter talks about his two new languages for the JVM: Duby and its dynamic cousin Surinx.
The final release of JRuby 1.4 is now available, with many performance, Java integration and other improvements. It also adds a native launcher for Windows, which works around some problems with the BAT-based launcher. Also: the Hpricot 0.8.2 release fixes problems with Hpricot on JRuby.
NewRelic just released RPM 2, the latest version of their performance monitoring software. RPM, which is available as SaaS (Software as a Service) now supports monitoring Java web/JEE applications as well as Ruby on Rails applications. We talked to NewRelic's Lew Cirne about the new release.
JRuby 1.4RC1 is out and brings 1.8.7 compatibility, improved Java integration, a Windows installer, a new YAML parser as well as a new embedding API.
JRuby 1.4 is coming up with 1.8.7 support and improved Java integration. First builds that bundle JRuby and MLVM are available. Also: JRubyConf's program has been announced - and some more seats are available.
The JRuby team has added Ruby 1.8.7 compatibility to the current JRuby trunk. Android received some more attention with JRuby support for the Android Scripting Environment as well as a JRuby irb app. Also: the bcrypt-ruby library for hashing passwords is now available for JRuby, as well as Ruby 1.9.
Sun's JRuby team, Charles Nutter, Tom Enebo, Nick Sieger, will leave Sun and join EngineYard, where they'll continue work on JRuby. YAML support was improved with Ola Bini's work on a new YAML parser. Also: a look at how to run JRuby under OSGi and the upcoming JRuby Installer.
Ruby 1.9.2 Preview 1 is now available and brings API improvements such as Method#parameters, GC optimization for long lived objects, and more. Also: to keep up to speed with Ruby implementations, David A. Black announced ruby-versions.net which provides a long list of MRI versions as well as JRuby, Rubinius and REE installations.
Martin Fowler talks about ThoughtWorks's experience with using Ruby on client projects for the past three years, and the creation of a Ruby-based product 'Mingle'.
Scala has been receiving much attention lately as a possible candidate to replace Java in the future. James Strachan creator of Groovy advocates in favor of Scala as James Gosling, creator of Java and Charles Nutter JRuby Core Developer, have done in the past.