title: what are the advantages use scrapyd?
body: <p>The scrapy doc says that:</p>
  
  <blockquote>
    <p>Scrapy comes with a built-in service, called “Scrapyd”, which allows you to deploy (aka. upload) your projects and control their spiders using a JSON web service.</p>
  </blockquote>
  
  <p>is there some advantages in comformance use scrapyd?</p>