←back to thread

Details of the Cloudflare outage on July 2, 2019

(blog.cloudflare.com)
698 points jgrahamc | 3 comments | 12 Jul 19 15:46 UTC | HN request time: 0.217s | source
1. neom ◴[12 Jul 19 18:08 UTC] No.20422943[source]▶
Awesome write up as usual John. I'm no expert so I was wondering: "In the initial moments of the outage there was speculation it was an attack of some type we’d never seen before." - Is there a reason you would go to this first vs checking the last lot of code deploys first/and or at the same time?
replies(2): >>20423009 #>>20423252 #
2. jgrahamc ◴[12 Jul 19 18:16 UTC] No.20423009[source]▶
It was speculation. We were looking at sudden massive CPU use all over the world. Since we do staged deploys that shouldn't happen yet...
3. sophacles ◴[12 Jul 19 18:44 UTC] No.20423252[source]▶
> At 13:37 TeamCity built the rules and ran the tests, giving it the green light.

I assume this is why :D