Pool
constructor(minConnections: Int = 2, maxConnections: Int = 10, acquireTimeout: Duration = 30.seconds, idleTimeout: Duration = 5.minutes, maxLifetime: Duration = 30.minutes, cleanupInterval: Duration = 30.seconds, validationQuery: String? = null, validateAfterIdle: Duration = 10.seconds, shutdownTimeout: Duration = 30.seconds)