What to Monitor: A Three-Layer Metrics Checklist for Servers, Applications, and Business
A monitoring dashboard full of numbers raises one question: what should you actually watch? This guide divides metrics into three layers — server (CPU/memory/disk/bandwidth), application (rate/errors/latency), and business (conversion/registrations/orders) — with the meaning and typical alert thresholds for each, plus a ready-to-use metrics checklist table.