Observability terms
You cannot fix what you cannot see
Running software in production without observability is flying blind. Metrics, logs, traces, dashboards, alerting, and the three pillars of observability give you the insight needed to understand what your system is actually doing under real conditions. This category covers the tools, patterns, and vocabulary of production-grade visibility.
Structured Logging PHP 8.0+
Emitting log entries as machine-parseable key-value pairs (JSON) rather than free-form strings — enabling filtering, aggregation, and alerting.
1mo ago
observability intermediate
SLO / SLI / SLA
SLI (what you measure), SLO (your internal target), SLA (your customer commitment) — the hierarchy that turns vague 'uptime' promises into measurable operational objectives.
2mo ago
observability intermediate
Spans & Traces
A trace is one request's full journey; spans are the individual operations within it — each span has a name, start time, duration, status, and optional attributes.
2mo ago
observability beginner