Twitter says outage caused by dual data-center crashes


Twitter experienced a brief outage on Thursday--its second in the last six weeks. Despite initial speculations that the site was overloaded because of the impending Olympic Games, Twitter said the outage was a result of data center failure. 

In a brief blog post, Mazen Rawashdeh, VP of engineering at Twitter, attributed the downtime to problems that occurred within the company's data centers. Two data centers apparently failed at about the same time--between 8:20 and 9:00 a.m. PST. Service was eventually restored at about 10:25 a.m.

"What was noteworthy about today's outage was the coincidental failure of two parallel systems at nearly the same time," Rawashdeh wrote. Rawashdeh added that Twitter is "investing aggressively" in their systems to avoid a repeat of this situation in the future.

For more:
- check out this blog post at Twitter 
- check out this article at Computerworld

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