Site24x7.com

Calculate downtime of a website

When a website check from its primary monitoring location fails, Site24x7 waits for up to 30 seconds to get a response from the site (30 seconds is the default timeout period). If there is no response within 30 seconds, rechecks will be done from the secondary monitoring locations selected or any 3 random secondary locations. If the site does not respond to these rechecks within 30 seconds, Site24x7 declares the website as unavailable and sends out alerts.

For example, assume your website is being monitored (check frequency) every 10 minutes.

  • At 10:30:00 AM - Site24x7 polls your site from primary location (e.g.- California). Assume your site is not responding within 30 seconds.
  • At 10:30:30 AM - Recheck done from secondary location #1. If there is no response from the site, Site24x7 keeps trying for up to 30 seconds for response.
  • At 10:31:00 AM - Recheck done from secondary location #2. If there is no response from the site, Site24x7 keeps trying for up to 30 seconds for response.
  • At 10:31:30 AM - Recheck done from secondary location #3. If there is no response from the site, Site24x7 keeps trying for up to 30 seconds for response.
  • At 10:32:00 AM - No response from any of the secondary locations. So site is declared as down and alerts are sent. The next check is scheduled at 10:42:00 am. If the website responds at this time, the site is declared as up. So the total downtime comes to around 12:00 minutes.

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