Re:Details of the Cloudflare outage on July 2, 2019
by citruspi on Friday July 12, 2019 @01:55PM
(#20422798)
They mentioned it was a regular expression in the original post[0] on the day of the incident, that part isn't news (discussion here[1]).
"Pushing bad regex to production, chaos monkey code causing cascading network failure, etc.", in response to a comment from someone who previously worked at Cloudflare.
[1] https://news.ycombinator.com/item?id=20415608