require 'net/http/pipeline'

Net::HTTP.start 'localhost', 9000 do |http|
  reqs = []
  reqs << Net::HTTP::Get.new('/?delay=1.5')
  reqs << Net::HTTP::Get.new('/?delay=1.0')

  http.pipeline reqs do |res|
    puts res.code
    puts res.body[0..60].inspect
    puts
  end
end

# 200
# "1.5"
#
# 200
# "1.0"
#
#
# real	0m2.941s < err?
# user	0m0.328s
# sys	0m0.089s