Teaching observability without drowning dashboards
Cardinality budgets are the new lint rules — a note from our mentor desk in Pathum Wan.
Observability Stack for JVM Services spends half its time on labels teams should never ship. We print a fake invoice showing cost spikes when userId lands on a metric — visceral beats abstract.
Participants build a RED dashboard that must fit on a single screen without scrolling on a 13-inch laptop. If you need more tiles, you defend each addition in writing. Mentors reject cleverness that hides debt.
We end with a Saturday session aligned to ICT hours so engineers juggling school pickups can attend live. Recordings exist, but live critique is where graphs become stories finance understands.