Social Network Downtime Study Shows Facebook’s Reliability Improved as 2008 Progressed

Pingdom has just published the results of their Social Network Downtime in 2008 study, and here are the results:

  • Facebook’s uptime was 99.92% in 2008 – it was down for only 7.2 hours throughout the year.
  • This placed Facebook 5th in Pingdom’s ranking of the top 15 social networks by uptime.
  • Facebook didn’t have any single continuous outage lasting longer than 25 minutes in 2008.

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In addition, nearly 70% of Facebook’s total 2008 downtime occurred in the first half of the year. The site was only down for 2.3 hours during the last six months of 2008.

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Tests were performed from multiple test sites in both North America and Europe. However, Pingdom’s methodology only loaded the home page for each site without logging in – so it didn’t catch downtime that could only be detected through user interaction.