intridea/multi_json — pull request #48 by japgolly (2012-04-23 00:52:53+00:00)
Title: New adapter: jrjackson

Hi. There's a JRuby JSON gem at https://github.com/guyboertje/jrjackson

Wow man, I benchmarked a heap of libs and this one blows the competition away!!
Original benchmarks: http://japgolly.blogspot.com.au/2012/04/ruby-json-libraries.html

Best JRuby option was json-jruby at around 7.3sec. This JrJackson lib takes around 1.9sec!