rate_limit_test.rb

#!/usr/bin/env ruby

require 'httparty'

url = 'https://google.com'
concurrency = 15

threads = []
concurrency.times do |i|
  threads << Thread.new do
    response = HTTParty.get(url)
    p "Request #{i}: #{response.code}"
  end
end

threads.each(&:join)