Module metrics 

Metrics — Prometheus-compatible counters, gauges, and histograms.

This module provides in-process metrics without external dependencies. Exposed via GET /api/metrics in Prometheus text format.

Structs

CounterHandle

GaugeHandle

HistogramHandle

MetricsHandles

Metrics handles initialized at startup.

MetricsRegistry

Thread-safe metrics registry.

Functions

get_metrics

Get or create the metrics handles.

register_builtin_metrics

Register all built-in metrics. Call once at startup.

registry

Get the global metrics registry.