loop.rb

#!/usr/bin/env ruby                                                                                     
                                                                                                        
require 'eventmachine'                                                                                  
require 'colorize'                                                                                      
                                                                                                        
EM.run do                                                                                               
  @queue = EM::Queue.new                                                                                
                                                                                                        
  EM.add_periodic_timer(1) do                                                                           
    puts "[#{Time.now}] Running indexing...".green                                                      
    sleep 4                                                                                             
    @queue.push({:execution_time => rand(5)})                                                           
  end                                                                                                   
                                                                                                        
  EM.add_periodic_timer(10) do                                                                          
    puts "[#{Time.now}] Serving results".blue                                                           
    @queue.size.times do                                                                                
      @queue.pop { |msg| puts msg }                                                                     
    end                                                                                                 
  end                                                                                                   
end    

https://skitch.com/auxesis/ek73j/2-auxesis-rumbumptious.local