The original title is "Monitoring Fundamentals: The Four Golden Signals and Why You Can't See Production"

Short summary

A dialogue-style article explaining why monitoring matters: you can't directly see production systems, so you rely on proxies — just like a car dashboard. The four golden signals (latency, traffic, errors, saturation) form the starting set, with saturation uniquely providing early warning before things go wrong. A dashboard that lies is worse than no dashboard at all.

• •Monitoring exists because you can't directly observe production systems — visibility, not trust, is the issue
• •Four golden signals: latency (percentiles), traffic, errors, and saturation (the only forward-looking signal)
• •A dashboard that shows everything's fine when it's wrong is worse than no dashboard

Generated with AI, which can make mistakes.