Key developers behind the JRuby project have left Sun and signed on with Engine Yard, one of the most prominent companies in the Ruby on Rails ecosystem. The move could accelerate JRuby development, contributing to broader interoperability between Ruby and Java.
The Java virtual machine was not originally conceived as a multilanguage runtime, but Sun began to take serious steps to make it more accommodating to dynamic programming languages in 2006 with the introduction of the InvokeDynamic bytecode operation and other related proposals. At roughly the same time, Sun also hired several leading JRuby developers, including Charles Nutter. The project has evolved considerably since then and now delivers reasonable performance for running relatively complex Ruby code on top of the JVM.
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