JRuby on CRaC Part 1: Let's Get CRaCking! – Charles Oliver Nutter

The Hardest Problem in JRubyJRuby is the most successful and widely-deployed alternative Ruby implementation, but is frequently overlooked as an option due to several misconceptions:“JRuby won’t work for my app because we use C extensions”Most popular C extensions have JRuby equivalents (using pure-Ruby or our similar JRuby extension API), and others can be replaced by equivalent JVM libraries. Many applications will work out of the box with a simple bundle install.