DevOps
Logs, metrics and traces — what each one is actually for
The "three pillars" of observability answer different questions. Knowing which one to reach for saves hours during an incident.
Tag
#monitoring
Every story tagged #monitoring.
DevOps
Health checks that mean something: liveness vs. readiness
A health check that always returns 200 is worse than none. Separate "is the process alive?" from "can it serve traffic?" and your deploys get safer.
DevOps
SLOs and error budgets: deciding how reliable is reliable enough
100% uptime is the wrong goal. Service level objectives turn reliability into a number you can plan around, and error budgets tell you when to slow down.