CDN AB Test Proc

gistfile1.rb

:s3_host_alias => Proc.new{ 
  if Rails.env.test? or Rails.env.development? 
    $CDN_HOST 
  else 
    bit = rand(4) 
    case bit 
    when 0 
      $CDN_HOST 
    when 1 
      $CDN_HOST_TWO
    when 2
      $CDN_HOST_THREE
    when 3
      $CDN_HOST_FOUR
    end
  end
}