An accidental data deletion was said to be the cause of a Christmas Eve outage at Amazon's data center in northern Virginia. The mistake, which was apparently made by a developer unaware that his commands were also controlling online systems, impacted the company's Elastic Load Balancing Service, which caused users to experience issues with APIs, as well as high latency. Related issues began spreading to other infrastructure, as the support team scrambled to keep the outage in check. Service was fully restored 14 hours later.
Amazon suffered an unrelated six-hour outage at the same facility in October of last year. A memory leak impacted the company's Elastic Block Storage servers, resulting in a rapid loss of performance.