Module embed_metrics 

Lightweight observability for the embeddable KV store.

Tracks per-operation latency histograms (microseconds) and bytes moved. Percentile computation is on-demand via sort, fine for the sample sizes we hit on a single-engine warm path; for very high throughput an HDR/CKMS-style sketch would be more appropriate.

Structs

EmbedMetrics

Aggregate metrics across all ops. Cheap to clone; intentionally process-global so the engine and any cli-stats utility look at the same registry.

OpSnapshot

Snapshot of one op’s stats. Cheap to clone.

Enums

Op

Op tag for metric attribution. Cheap enum so the hot path doesn’t touch a string.

Functions

metrics

Borrow the process-global metrics registry.