One valid setting broke 85% of Fastly's network
How a bug that shipped on 12 May 2021 sat quiet for almost four weeks until one customer's valid configuration change set it off and 85 percent of Fastly's network returned errors.
01 · A quiet bug
WS · One customer's valid settings change broke 85% of Fastly's network
A bug that waited almost four weeks.
12 May: a bug ships, unseen
12 May 2021.
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