If you are, or have ever been, a sysadmin, grab a bag of popcorn and cruise through this one. Thrills and chills! https://thomasp.vivaldi.net/2023/07/28/what-happened-to-vivaldi-social/
What happened to Vivaldi Social? | Thomas Pike’s other blog

A deep dive into the events of Saturday 8 July 2023, when user accounts started disappearing from the Vivaldi Social Mastodon instance.

Thomas Pike’s other blog

@timbray oh my so, umm: a race condition, a mismatched parentheses, call by ref vs val, possible Unicode string .. only missing an off-by-one error for Yahtzee .

This is a very good write up and I wish we got more that are this candid.