Today at 1651 UTC, we opened an internal incident entitled "Facebook DNS lookup returning SERVFAIL" because we were worried that something was wrong with our DNS resolver 1.1.1.1. But as we were about to post on our public status page we realized something…

Yesterday there was a big Facebook outage caused by BGP. I’ve been vaguely interested in learning more about BGP for a long time, so I was reading a couple of articles.