benchmark memcached vs redis

mem_vs_redis.rb

# -*- coding: utf-8 -*-

require 'benchmark'
require "securerandom"

namespace :dev do
  desc "benchmark mem vs redis"
  task :benchmark => :environment do
    dev_server = '172.19.60.176'
    n = 10000

    stores = {
        :dalli_store => ["#{dev_server}:11211",  {:namespace => 'dev', :compress => false }],
        :redis_store => ["redis://#{dev_server}:6379/0/cache"]
    }

    actions = {
        :hit => lambda{
          Rails.cache.fetch("test")
        },
        :miss => lambda{
          Rails.cache.read("test_" + SecureRandom.hex(10))
        }
    }

    stores.each do |store, args|
      ActionController::Base.cache_store = store, *args
      Rails.cache.delete('test')
      Rails.cache.fetch('test'){ SecureRandom.hex(30) }

      Benchmark.bm(30) do |x|
        actions.each do |label, proc|
          x.report("cache_store:#{store}:#{label}") do
            n.times do
              proc.call
            end
          end
          x.report("cache_store:#{store}:delete") do
            n.times do |i|
              Rails.cache.write("test_#{i}", i, :expires_in => 2)
            end
            n.times do |i|
              Rails.cache.delete("test_#{i}", i)
            end

          end
        end
      end
    end
  end
end