hystrix_example.rb

#!/usr/bin/env jruby

require 'rubygems'
require 'jbundler'

require 'java'

java_import com.netflix.hystrix.HystrixCommand
java_import com.netflix.hystrix.HystrixCommandGroupKey

class TestCommand < HystrixCommand
  def initialize(name)
    super(HystrixCommandGroupKey::Factory.asKey("ExampleGroup"))
    @name = name
  end

  def run
    "Hello #{@name}!"
  end
end

puts TestCommand.new("mat").execute

exit(0)

Jarfile

jar 'com.netflix.hystrix:hystrix-core', '~>1.2.16'