ruby 使用赛璐珞将长时间运行的请求并行化

Posted 2021-05-15

require 'celluloid'
require "benchmark"
require 'open-uri'

delay_seconds = [4,4,4,4,4,4]
BASE_URL = "http://slowapi.com/delay"

class Crawler
  include Celluloid
  def read(delay)
    url = "#{BASE_URL}/#{delay}"
    open(url) { |x| x.read }
  end
end

pool = Crawler.pool(size: delay_seconds.length)

time = Benchmark.measure do
  crawlers = delay_seconds.map do |delay|
    begin
      pool.future(:read, delay)
    rescue DeadActorError, MailboxError
    end
  end
  result = crawlers.compact.map { |crawler| crawler.value rescue nil }
end

#result.each_with_index {|i,v| puts "Response ##{v}: #{i}"}  
puts time