TL;DR

On October 19, 2025, AWS hit a massive DNS failure that dragged on for more than 24 hours—only 10 days later did they drop the official root-cause analysis explaining how Dynamo’s DNS went south, plus the ripple effects on EC2 and Network Load Balancers. This video breaks it all down with quick timestamps for the high-level summary, the nitty-gritty of Dynamo’s DNS meltdown, EC2 errors and NLB hiccups.

Along the way, Hussein peppers in links to his AWS RCA, various backend/network/database/Node.js/NGINX/Python courses (most with Udemy coupons), plus his Medium, YouTube membership, podcast and “buy me a coffee” pages—basically your one-stop shop for backend engineering goodies.

Watch on YouTube