Custom serializer benchmarking

benchmark.rb

user = User.first

require 'Benchmark'

Benchmark.bm do |x|
  x.report { 1000.times do UserSerializer.serialize(user) end}  
  x.report { 1000.times do FJUserSerializer.new(user).serializable_hash end}  
end

# # =>
#        user     system      total        real
#    0.000697   0.000175   0.000872 (  0.000869)
#    0.014885   0.001507   0.016392 (  0.016488)

custom_serializer.rb

class Serializer
  def self.serialize(object)
    methods(false).map do |function_name|
      [function_name, self.send(function_name, object)]
    end.to_h
  end
end

class UserSerializer < Serializer
  module_function 

  def self.email(object)
    object.email
  end

  def self.id(object)
    object.id
  end

  def self.uid(object)
    object.uid
  end
end

fastjson_api_serializer.rb

# Gem https://github.com/Netflix/fast_jsonapi

class FJUserSerializer
  include FastJsonapi::ObjectSerializer

  attributes :id, :email, :uid
end