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JRuby

This is a community wiki dedicated to [JRuby], an implementation of the Ruby programming language atop the Java Virtual Machine (JVM).

[JRuby Downloads] ([Nightly Builds] (http://ci.jruby.org/))

Google Summer of Code 2016

JRuby Basics

• About JRuby
• Getting Started
• Configuring JRuby
• Walkthroughs and Tutorials
• Integrating with JVM languages and libraries
• Performance Tuning
• C extension alternatives
• Troubleshooting - Improving Startup Time, Memory Use, etc.
• FAQs

JRuby Specifics

• Concurrency in JRuby
• Gems known to be threadsafe
• Gems known not to be threadsafe
• LoadService loading mechanism
• EnhancedSecurity
• Method Signatures and Annotations in JRuby extensions
• Java extensions for JRuby using polyglot maven
• Signal Handling

JRuby+Truffle

• Truffle
• Downloading GraalVM
• Using Graal in JDK 9 EA Builds
• Building Graal
• JRuby and Truffle Interop
• Truffle FAQ

Getting Involved

• Code
• Setting up an IDE: IntelliJ
• Building JRuby
• Communicate: Mailing Lists, IRC, Project Bugtracker
• Build Server - Not updated frequently. Refer Travis instead for now
• CI: Travis, CloudBees, AppVeyor
• Design/Internals
• Distributions
• JRuby Bug Reporting Style Guide
• Triaging
• JRuby Style Guide
• JRuby and RubySpecs
• Ruby 1.9 Support - Remaining work to be done and how to contribute
• Release Documentation
• RoadMap
• Testing JRuby and InvokeDynamic
• Add JRuby Examples-Share your experience.

Web Applications (Rails, servers, others)

• JRuby on Rails
• Deploying a Rails App in Tomcat with JRuby
• ActiveRecord-JDBC
• Warbler
• Servers

Builds/tooling

• Rake and Ant Together: A Pick It n’ Stick It Approach
• JRuby Rake vs. Ant
• Getting Ruby Backtraces on a Running Program
• Profiling Object Allocations
• Updating Timezone data
• Packaging Native Installers with the JavaFX Ant Tasks

Desktop Applications

• GUI Frameworks
• The Redcar Editor (built with SWT)

Get Creative

• Ruby Processing (create processing-2.2.1 sketches with ruby)
• JRubyArt (create processing-3.0+ sketches with ruby)

Evangelism

• Benchmarking Tips and Tricks
• JRuby Talks and Presentations
• Success Stories
• Case Studies
• Articles
• JRuby Books
• In Your Region
• Ruby in Research

Related Websites

• JRuby's article on Wikipedia
• Fresh JRuby news Yahoo Pipes aggregator [JRuby]: http://jruby.org [JRuby Downloads]: http://jruby.org/download

Archive

• Ruby Summer of Code 2010
• Google Summer of Code 2012
• Google Summer of Code 2013