crank/apps/admin-api/src/pool_metrics.rs

use std::time::Duration;

use sqlx::PgPool;

pub fn spawn_postgres_pool_metrics(pool: PgPool) -> tokio::task::JoinHandle<()> {
    tokio::spawn(async move {
        let mut interval = tokio::time::interval(Duration::from_secs(5));
        loop {
            interval.tick().await;
            crank_observability::record_db_pool_connections(pool.size(), pool.num_idle());
        }
    })
}