Webaccording to infrastructure vice president santosh janardhan, a command issued during maintenance inadvertently caused a shutdown of the backbone that. Weba cache stampede occurs when several threads attempt to access a cache in parallel. If the cached value doesn’t exist, the threads will then attempt to fetch the. Webmany users reported being logged out of facebook accounts with no ability to log back in. Service was mostly restored by 1 p. m. , though some users noted lingering. Webonce our backbone network connectivity was restored across our data center regions, everything came back up with it. But the problem was not over — we knew that. Weban error during routine maintenance on facebook's network of data centers caused monday's collapse of its global system for more than six hours, leading to a. Weba prolonged, global outage of facebook’s apps sent the company’s engineers scrambling to fix the issue at one of its data centers in california, according to two.
