The library. Every incident, structured.

A growing archive of public postmortems, broken down into a consistent shape: what broke, why it cascaded, and what to take from it. New incidents added regularly.

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2 results · filtered
topic: deploy
id
incident
org
date
duration
severity
tags
FM-005
The Valid Config Change That Broke 85% of FastlyA software release shipped 27 days earlier left a latent bug in Fastly's edge platform. A routine, valid customer configuration change triggered it and 85% of Fastly's network began returning errors within seconds.
Fastly
2021-06-08
~1h
SEV-1
cdnedge-networkconfig
FM-015
The Impossible Date That Broke Azure VM StartupA leap-day bug stopped new Azure VMs from joining the control plane globally, then a rushed recovery update disconnected VMs in seven clusters.
Microsoft Azure
2012-02-29
34h 15m
SEV-1
leap-yearvm-startupcertificate