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@wasifhossain
Forked from lsylvester/cache_version bench.rb
Created December 27, 2018 11:20
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# frozen_string_literal: true
begin
require "bundler/inline"
rescue LoadError => e
$stderr.puts "Bundler version 1.10 or later is required. Please update your Bundler"
raise e
end
gemfile(true) do
source "https://rubygems.org"
gem "activerecord", path: "."
gem "activesupport", path: "../activesupport"
gem "activemodel", path: "../activemodel"
gem "benchmark-ips"
gem 'pg'
gem "pry"
end
require "active_record"
require "benchmark/ips"
conn = { adapter: "postgresql", database: "bench" }
ActiveRecord::Base.establish_connection(conn)
class User < ActiveRecord::Base
connection.create_table :users, force: true do |t|
t.timestamps
end
end
user = User.create!
user.reload
attributes = user.instance_variable_get(:@attributes).deep_dup
puts "New: #{user.updated_at_before_type_cast.to_param}"
puts "New keeping format: #{user.updated_at_before_type_cast.delete('- :.').to_param}"
puts "Original: #{user.updated_at.utc.to_s(:usec).to_param}"
Benchmark.ips do |x|
x.report("New") do
user.instance_variable_set(:@attributes, attributes.deep_dup)
user.updated_at_before_type_cast.to_param
end
x.report "New keeping format" do
user.instance_variable_set(:@attributes, attributes.deep_dup)
user.updated_at_before_type_cast.delete('- :.')
end
x.report "Original" do
user.instance_variable_set(:@attributes, attributes.deep_dup)
user.updated_at.utc.to_s(:usec).to_param
end
x.compare!
end
# New: 2018-10-11 01:28:30.836427
# New keeping format: 20181011012830836427
# Original: 20181011012830836427
# Warming up --------------------------------------
# New 26.080k i/100ms
# New keeping format 23.679k i/100ms
# Original 7.127k i/100ms
# Calculating -------------------------------------
# New 292.214k (± 9.0%) i/s - 1.460M in 5.033789s
# New keeping format 250.280k (± 8.5%) i/s - 1.255M in 5.045426s
# Original 69.712k (± 5.5%) i/s - 349.223k in 5.024369s
#
# Comparison:
# New: 292214.1 i/s
# New keeping format: 250279.6 i/s - same-ish: difference falls within error
# Original: 69711.7 i/s - 4.19x slower
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