postgres

type Config struct {
	URL string `config:"url" validate:"required"`

	MaxOpenConns    int           `config:"max_open_conns"     validate:"min=0"`
	MaxIdleConns    int           `config:"max_idle_conns"     validate:"min=0"`
	ConnMaxLifetime time.Duration `config:"conn_max_lifetime"  validate:"min=0"`
	ConnMaxIdleTime time.Duration `config:"conn_max_idle_time" validate:"min=0"`

	// ConnectTimeout bounds the ping at boot, which turns an unreachable
	// database into a failed boot instead of a hang.
	ConnectTimeout time.Duration `config:"connect_timeout" validate:"min=1s"`
}