email@example.com Calendar <main@...>
Unplanned downtime #outage
An update to the site went badly, and I had to revert the changes. The site was down for about 5 minutes.
Gritty details: I changed a low level library that deals with converting data to and from JSON. This mistakenly caused many integers to be output as named strings in JSON, which caused problems for the code that was expecting to deal with integers. This caused some errors to show on the website and some emails to be sent without footers. I caught it within about 10 seconds of going live.