Thread by @MattieTK

Fastly, the CDN provider, is having a massive outage, resulting in Twitch, Pinterest, Reddit, The Guardian, and the FT returning 503 errors.

status.fastly.com

Update from Fastly's status page:

Identified - The issue has been identified and a fix is being implemented. Jun 8, 10:44 UTC

What's possible now is a bunch of sites will suffer from a second outage due to lack of caching as their application servers have to suddenly catch up.

Looks like the issue is resolved. Fastly run a lot of POPs (points of presence) around the world, and it may take a while to hit them all, but we're on the road to recovery.

All the sites in the first tweet are back up (from London at least). Great work @fastly SREs *hug ops*

Fastly have confirmed on their status page.

Monitoring - The issue has been identified and a fix has been applied. Customers may experience increased origin load as global services return. Jun 8, 10:57 UTC

That "origin load" is what I was warning about 🙏

Fastly have just published an analysis on what happened when the internet fell over yesterday.

Turns out a bug in Fastly's CDN had existed since May 12th that got triggered by a customer's configuration change yesterday taking down 85% of their network.

fastly.com/blog/summary-o…