[
  {
    "idx": 1,
    "url": "http://bravenewgeek.com/you-own-your-availability/",
    "ok": true,
    "error": null
  },
  {
    "idx": 2,
    "url": "http://www.itproportal.com/2016/01/04/isis-hackers-claim-responsibility-bbc-outage-during-test-attack/",
    "ok": false,
    "error": "HTTP 404"
  },
  {
    "idx": 3,
    "url": "https://dzone.com/articles/operations-is-more-than-just-systems-administratio",
    "ok": false,
    "error": "HTTP 410"
  },
  {
    "idx": 4,
    "url": "https://dzone.com/articles/oysters-underground-nightmare-when-devops-kills-re",
    "ok": false,
    "error": "HTTP 410"
  },
  {
    "idx": 5,
    "url": "http://blog.acolyer.org/2015/10/16/holistic-configuration-management-at-facebook/",
    "ok": true,
    "error": null
  },
  {
    "idx": 6,
    "url": "https://www.pagerduty.com/blog/quick-tips-how-to-post-mortem-every-incident/",
    "ok": false,
    "error": "HTTP 404"
  },
  {
    "idx": 7,
    "url": "http://www.infoq.com/presentations/netflix-asynchronous-apps",
    "ok": true,
    "error": null
  },
  {
    "idx": 8,
    "url": "http://queue.acm.org/detail.cfm?id=2655736",
    "ok": false,
    "error": "HTTP 403"
  }
]