Technology

Facebook says sorry for mass outage and reveals why it happened

Fb, Whatsapp and Instagram logos are displayed by damaged glass on this illustration taken October 4, 2021.

Dado Ruvic | Reuters

Facebook has apologized for the mass outage that left billions of customers unable to entry Fb, Instagram, WhatsApp and Messenger for a number of hours.

“To all of the folks and companies around the globe who depend upon us, we’re sorry for the inconvenience brought on by at this time’s outage throughout our platforms,” mentioned Santosh Janardhan, Fb’s vp of infrastructure, in a blogpost late Monday.

The outage, which prevented customers from refreshing their feeds or sending messages, was brought on by “configuration adjustments on the spine routers,” Janardhan mentioned, with out specifying precisely what the adjustments had been.

The adjustments triggered “points” that interrupted the circulate of site visitors between routers in Fb’s knowledge facilities around the globe, he added.

“This disruption to community site visitors had a cascading impact on the way in which our knowledge facilities talk, bringing our companies to a halt,” Janardhan mentioned.

Fb, Instagram and WhatsApp stopped working shortly earlier than midday ET, when the web sites and apps for Fb’s companies had been responding with server errors.

Simply after 7 p.m. ET, round six hours after the platforms went offline, Fb CEO Mark Zuckerberg wrote on his Fb web page: “Fb, Instagram, WhatsApp and Messenger are coming again on-line now.”

He added, “Sorry for the disruption at this time – I understand how a lot you depend on our companies to remain related with the folks you care about.”

The outage marked the longest stretch of downtime for Fb since 2008, when a bug knocked the positioning offline for a couple of day, affecting about 80 million customers. The platform at present has round 3 billion customers.

In 2019, the same outage lasted about an hour. Fb blamed a server configuration change for that incident.

The outage got here sooner or later after the whistleblower who leaked personal inner analysis to each The Wall Road Journal and Congress revealed herself forward of an interview with the CBS program “60 Minutes.” The paperwork, first reported in a collection of Journal tales, revealed that the corporate’s executives understood the damaging impacts of Instagram amongst youthful customers and that Fb’s algorithm enabled the unfold of misinformation, amongst different issues.

Fb shares closed down nearly 5% on Monday however they had been up modestly practically 1% in early buying and selling on Tuesday.  

— Further reporting by CNBC’s Samantha Subin.


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