Ruby Serializers benchmark

Gemfile

source "https://rubygems.org"

git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }

ruby '2.3.8'

# Specify your gem's dependencies in ams_vs_jbuilder.gemspec
gemspec
gem 'benchmark-ips'
gem 'active_model_serializers', '0.9.4'
gem 'jbuilder'
gem 'oj'
gem 'faker'

serializers_benchmark.rb

require 'rubygems'
require 'bundler/setup'
Bundler.require
require 'json'

class Movie
  attr_accessor :id, :name, :descritpion, :uuid, :score, :meta, :created_at
end

class MovieSerializer < ActiveModel::Serializer
  attributes :id, :name, :descritpion, :uuid, :score, :meta, :created_at
end

movies = 1_000.times.map do |i|
  movie = Movie.new
  movie.id = i
  movie.name = Faker::Lorem.words(2).join(" "),
  movie.descritpion = Faker::Lorem.paragraphs
  movie.uuid = SecureRandom.uuid
  movie.score = SecureRandom.random_number(10.0)
  movie.meta = { director: Faker::Name.name, country: Faker::FunnyName.name }
  movie.created_at = DateTime.now
  movie
end
movie = movies.sample

puts "Single object"
Benchmark.ips do |x|
  x.report 'to_json' do
    movie.to_json
  end

  x.report 'jbuilder' do
    Jbuilder.encode do |json|
      json.id movie.id
      json.name movie.name
      json.descritpion movie.descritpion
      json.uuid movie.uuid
      json.score movie.score
      json.meta movie.meta
      json.created_at movie.created_at
    end
  end

  x.report 'AMS' do
    MovieSerializer.new(movie).to_json
  end

  x.compare!
end

puts "Array of objects"
Benchmark.ips do |x|
  x.report 'to_json' do
    movies.to_json
  end

  x.report 'jbuilder' do
    Jbuilder.encode do |json|
      json.array! movies do |sec|
        json.id movie.id
        json.name movie.name
        json.descritpion movie.descritpion
        json.uuid movie.uuid
        json.score movie.score
        json.meta movie.meta
        json.created_at movie.created_at
      end
    end
  end

  x.report 'AMS' do
    # TODO: unsolve this mistery
    # ActiveModel::ArraySerializer.new(movies, each_serializer: MovieSerializer)
  end

  x.compare!
end