Roblox back online after three-day outage

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The Roblox gaming platform is back online after a three-day outage.

Users started having difficulty signing in to the service on the afternoon of Thursday, October 29, before they could no longer sign in at all. In a blog post on the company’s corporate site, CEO David Baszucki (on the picture) said the outage was the result of a “subtle bug” in the company’s backend that caused Roblox’s infrastructure to “overflow”.

Due to its nature, this bug took a while to find, causing Roblox to crash for three days. The company said it would release a postmortem detailing what was wrong in the near future.

“It was a particularly difficult outage as it involved a combination of several factors,” wrote Baszucki.

“A central system in our infrastructure was overwhelmed, caused by a subtle bug in our backend service communications while under heavy load. This was not due to a spike in external traffic or any particular experience. Rather, the failure was caused by the growth in the number of servers in our data centers. The result was that most of Roblox’s services were unable to communicate and deploy effectively.

“Due to the difficulty in diagnosing the actual bug, recovery took longer than any of us would have liked. After successfully identifying this root cause, we were able to resolve the issue through performance tuning, reconfiguration and some load reduction. We were able to fully restore service this afternoon. “

In August, Roblox revealed that it had 48.2 million daily active users.

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