How a $10M Payment Platform Stopped Chasing Manual Scaling and Learned What 99.999999999% Durability Actually Means

https://highstylife.com/dealing-with-s3-eventual-consistency-before-the-2020-update-pragmatic-patterns-that-actually-worked/

This is a pragmatic case study about an engineering team that treated outages as a staffing problem. They accepted manual scaling, made ad hoc fixes during peak traffic, and treated storage durability as a marketing claim