Get yahoo finance data using async gem

Gemfile

# frozen_string_literal: true

source "https://rubygems.org"

git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }

gem "async", "~> 1.29"
gem "async-http", "~> 0.56.3"
gem "nokogiri", "~> 1.11"

yahoo_finance.rb

#!/usr/bin/env ruby

# required gems: "async", "async-http", "nokogiri"

require 'async'
require 'async/barrier'
require 'async/http/internet'
require 'nokogiri'
require 'uri'

STOCKS = ["GLOB", "^IXIC", "^GSPC", "^RUT", "CL=F", "GC=F", "SI=F", "EURUSD=X", "^TNX", "^VIX", "GBPUSD=X", "JPY=X", "GBPUSD=X", "^CMC200", "^FTSE", "^N225"]

Async do
	internet = Async::HTTP::Internet.new
	barrier = Async::Barrier.new
	
	STOCKS.each do |stock|
		barrier.async do
		    response = internet.get "https://finance.yahoo.com/quote/#{URI.encode_www_form_component(stock)}"
            doc = Nokogiri::HTML(response.read)
            value = doc.css('.smartphone_Mt\(6px\) [data-reactid="32"]').first.text.gsub(',', '').to_f
			puts "#{stock}: #{value}"
		end
        #The following line would make each request syncronous
        #barrier.wait
	end
ensure
	internet&.close
end