MessagePack & JSON

gistfile1.rb

require 'yajl'
require 'rest-client'
require 'zlib'
require 'msgpack'
require 'benchmark'
require 'colorize'

def compressed(d)
  output = StringIO.new
  gz = Zlib::GzipWriter.new(output)
  gz.write(d)
  gz.close
  output.string
end

def benchmark_on(struct)
  puts "\n-- ENCODING ----".yellow
  Benchmark.bm do |x|
    x.report('json') do
      100_000.times { Yajl::Encoder.encode(struct) }
    end
    x.report('msg') do
      100_000.times { struct.to_msgpack }
    end
  end
  puts "\n-- DECODING ----".yellow
  json_raw = Yajl::Encoder.encode(struct)
  msg_raw = struct.to_msgpack
  Benchmark.bm do |x|
    x.report('json') do
      100_000.times { Yajl::Parser.parse(json_raw) }
    end
    x.report('msg') do
      100_000.times { MessagePack.unpack(msg_raw) }
    end
  end
end

def compare_on(struct)
  msg = struct.to_msgpack
  length = msg.length
  clength = compressed(msg).length
  factor = clength / length.to_f
  puts "msg length: #{length} (#{clength} compressed - #{factor})"

  msg = Yajl::Encoder.encode(struct)
  length = msg.length
  clength = compressed(msg).length
  factor = clength / length.to_f
  puts "json length: #{length} (#{clength} compressed - #{factor})"
end

access_token = 'your access token here'

puts '== Full facebook profile ===='.green
raw_data = RestClient.get "https://graph.facebook.com/me?access_token=#{access_token}"
struct = Yajl::Parser.parse(raw_data)
compare_on struct
benchmark_on struct

puts "\n== Facebook friends list ====".green
raw_data = RestClient.get "https://graph.facebook.com/me/friends?access_token=#{access_token}"
struct = Yajl::Parser.parse(raw_data)
compare_on struct

puts "\n== 100 groups of 100 7-letter words ====".green
alphabet = 'abcdefghijklmnopqrstuvwxyz'
struct = 100.times.map do
  100.times.map do
    7.times.map { alphabet[rand(alphabet.length)] }.join('')
  end
end
compare_on struct

puts "\n== 100 groups of 100 7-digit numbers ====".green
alphabet = '123456789'
struct = 100.times.map do
  100.times.map do
    7.times.map { alphabet[rand(alphabet.length)] }.join('').to_i
  end
end
compare_on struct