Use Operational to track known errors.

Known errors are not critical errors;eg they won’t stop your server. But logging them can be useful for debugging and taking action on critical issues.

For instance, at Swipekit we run a server to scrape Ads. Scraping is a inheritedly grey area job. So we send a event with notification whenever there’s a known error in the scraping job.

const e = {
  name: "a critical event",
  avatar: "🤖",
  actions : [
    {
      url : 'https://webhook.site',
      buttonText : 'Press me'
    }
  ]
};