Global glitch: Swaths of internet go down after cloud outage

by Emma

Dozens of websites briefly went offline around the globe Tuesday, including CNN, The New York Times, and Britain’s government home page, after an outage at the cloud service Fastly June 8, 2021, 1:31 p.m.

LONDON — Dozens of websites briefly went offline around the globe Tuesday, including CNN, The New York Times, and Britain’s government home page, after an outage at the cloud service Fastly, illustrating how vital a small number of behind-the-scenes companies have become to running the internet.

Global glitch: Swaths of internet go down after cloud outage

Fastly said it had identified a service configuration that triggered disruptions, meaning the outage appeared to be caused internally. Brief internet service outages are not uncommon and are only rarely the result of hacking or another mischief.

Still, significant futures markets in the U.S. dipped sharply minutes after the outage, which came a month after a cyberattack forced the shutdown of the most considerable fuel pipeline in the U.S.

Fastly is a content delivery network, or CDN. It provides vital but behind-the-scenes cloud computing “edge servers” to many of the web’s famous sites. These servers store, or “cache,” content such as images and video in places worldwide to be closer to users, allowing them to fetch it more quickly and smoothly.

Fastly says its services mean that a European user going to an American website can get the content 200 to 500 milliseconds faster. Internet traffic measurement by Kentik showed that Fastly began to recover from the outage roughly an hour after it struck at mid-morning European time before most Americans were awake.

“Looks like it is slowly coming back,” said Doug Madory, an internet infrastructure expert at Kentik. He said, “it is serious because Fastly is one of the world’s biggest CDNs, and this was a global outrage.”

The impact of Fastly’s trouble highlights the relative fragility of the internet’s architecture given its heavy reliance on Big Tech companies — such as Amazon’s AWS cloud services — instead of a more decentralized array of companies.

“Even the biggest and most sophisticated companies experience outages. But they can also recover fairly quickly,” Madory said.

When the outage hit, some visitors trying to access CNN.com got a message that said: “Fastly error: unknown domain: cnn.com.” Attempts to access the Financial Times website turned up a similar message. At the same time, visits to The New York Times and the U.K. government’s gov. uk site returned an “Error 503 Service Unavailable” message, along with the line “Varnish cache server,” which is a technology that Fastly is built on. Down Detector, which tracks internet outages, posted reports on dozens of sites going down. Frank Bajak in Boston and Zen Soo in Hong Kong contributed to this report.

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