yaml vs json

yaml-vs-json.rb

require 'benchmark'
require 'yaml'
require 'rubygems'
require 'bundler'
Bundler.require(:default)
require 'active_support'

def token
  [Array.new(24) { rand(256).chr }.join].pack('m*').chop
end
puts "token length: #{token.size}"

data = {}
50.times do
  data[token] = Array.new(3) { token }
end

yaml = YAML.dump(data)
puts "YAML size: #{yaml.size}"
json = ActiveSupport::JSON.encode(data)
puts "JSON size: #{json.size}"
puts "JSON engine: #{ActiveSupport::JSON.engine}"

n = 1000
Benchmark.bmbm do |x|
  GC.disable
  x.report('YAML.dump') { n.times do; YAML.dump(data); end }
  x.report('YAML.load') { n.times do; YAML.load(yaml); end}
  x.report('JSON.encode') { n.times do; ActiveSupport::JSON.encode(data); end }
  x.report('JSON.decode') { n.times do; ActiveSupport::JSON.decode(json); end }
  GC.enable
end