benchmark_config_file_.rb

require 'json'
require 'benchmark'

class BaseRuntime
  def figlet
    puts "starting service..."
  end
end

class MainRuntime < BaseRuntime
  def start
    main_service = MainService.new
    #main_service.read_config
    main_service.read_config_once
    p "done"
  end
end

class MainService
  def read_config_once
    whitelisted_driver_ids = []
    Benchmark.bm do |x|
      x.report { whitelisted_driver_ids = read_config_from_file }
    end

    p whitelisted_driver_ids
  end

  def read_config
    n = 1000
    Benchmark.bm do |b|
      b.report do
        for i in 1..n do
          whitelisted_driver_ids = read_config_from_file
        end
      end

      b.report do
        n.times do
          whitelisted_driver_ids = read_config_from_file
        end
      end

      b.report do
        1.upto(n) do
          whitelisted_driver_ids = read_config_from_file
        end
      end

    end
  end

  private

  def write_config
    require 'json'
    id = 940417010
    temp_data = []
    10000.times do
      id = id + 1
      temp_data.push(id)
    end
    File.open("config_10000.json", "w") do |f|
      f.write(temp_data.to_json)
    end
  end

  def read_config_from_file
    file_name = "config_10000.json"
    file = File.open(file_name).read
    driver_ids = Kernel.eval(file).to_a
    driver_ids
  end
end

runtime = MainRuntime.new
runtime.figlet
runtime.start