isucon-go-tools

Query isutools (isucon-go-tools) metrics via PromQL on a Prometheus server. Use when the user wants to analyze ISUCON performance — slow endpoints, slow SQL queries, cache hit rate, DB connection pool, lock contention, queue depth, object pool usage, or benchmark scores — using Prometheus (`/api/v1/query`, `/api/v1/query_range`, Grafana, `promtool`). Triggers on phrases like "isutools metrics", "isucon-go-tools metrics", "isutools_api_*", "isutools_db_*", "ISUCON のメトリクスをクエリ", "PromQL for isutools".