15 writeups — drag to explore
01 · incidentSEV1
Every certificate expired at midnight
02 · incidentSEV1
The night DNS lied to us
03 · build2026
Postgres 12 to 16 with no downtime
04 · postmortemSEV2
One bad limit and the whole node went with it
05 · build2026
CI runners that scale to zero
06 · incidentSEV1
The autoscaler scaled us down at peak
07 · build2025
Taking 41% off the AWS bill
08 · build2025
Cutting the build from 34 minutes to 6
09 · postmortemSEV1
The etcd volume that quietly filled up
10 · build2025
Moving three clusters to GitOps
11 · incidentSEV2
Out of ports on the NAT gateway
12 · note2025
Page on symptoms, not causes
13 · postmortemSEV2
The consumer lag that fed itself
14 · postmortemSEV2
A Terraform plan that looked like a no-op
15 · build2024