carousell

Boot the example fasthttp server, fire representative requests, scrape /metrics, and report the emitted request_duration_seconds series (labels + bucket boundaries). Use to prove a change to prometheus.go — bucket edits, dependency upgrades, or labeling logic — produces the metric output you expect. This repo has no tests, so this is the primary verification harness.

Change the Prometheus histogram bucket boundaries for request_duration_seconds safely. Use when asked to add, remove, or retune latency buckets in prometheus.go. Guides the edit, explains the downstream blast radius (dashboards/alerts/SLOs), and verifies the result end-to-end.