The Case of the Recursive Resolvers

On September 30th 2021, Slack had an outage that impacted less than 1% of our online user base, and lasted for 24 hours. This outage was the result of our attempt to enable DNSSEC — an extension intended to secure the DNS protocol, required for FedRAMP Moderate — but which ultimately led to a series of…

Engradar shows a summary and links to the original article. The full article is hosted on slack.engineering.