{"UUID":"7562d257-0f9d-4f6a-b7e0-69c3649f79f4","URL":"https://medium.com/xandr-tech/2013-09-17-outage-postmortem-586b19ae4307","ArchiveURL":"","Title":"","StartTime":"0001-01-01T00:00:00Z","EndTime":"0001-01-01T00:00:00Z","Categories":null,"Keywords":null,"Company":"AppNexus","Product":"","SourcePublishedAt":"0001-01-01T00:00:00Z","SourceFetchedAt":"0001-01-01T00:00:00Z","Summary":"","Description":"A double free revealed by a database update caused all \"impression bus\" servers to crash simultaneously. This wasn't caught in staging and made it into production because a time delay is required to trigger the bug, and the staging period didn't have a built-in delay."}