Prometheus PostgreSQL Metrics

Metric Name	Type	Components
`pgx_pool_total_acquire_count`	Count	The cumulative count of successful acquires from the pool.
`pgx_pool_total_acquire_duration_ns_count`	Count	The total duration of all successful acquires from the pool.
`pgx_pool_total_acquire_cancel_count`	Count	The cumulative count of acquires from the pool that were canceled by a context.
`pgx_pool_total_acquire_empty_count`	Count	The cumulative count of successful acquires from the pool that waited for a resource to be released or constructed because the pool was empty.
`pgx_pool_total_conns_opened_count`	Count	The cumulative count of new connections opened.
`pgx_pool_total_destroyed_max_lifetime_count`	Count	The cumulative count of connections destroyed because they exceeded MaxConnLifetime.
`pgx_pool_total_destroyed_max_idle_count`	Count	The cumulative count of connections destroyed because they exceeded MaxConnIdleTime.
`pgx_pool_current_size`	Gauge	The total number of resources currently in the pool.
`pgx_pool_current_constructing`	Gauge	The number of connections with construction in progress in the pool.
`pgx_pool_current_acquired`	Gauge	The number of currently acquired connections in the pool.
`pgx_pool_current_idle`	Gauge	The number of currently idle connections in the pool.
`pgx_pool_max`	Gauge	The maximum size of the pool.