add new conns

pool.go

@@ -91,6 +91,20 @@ func (d *Pool) NewConn(mode connMode, pgConnString string) error {
 
 	return err
 }
+
+func (d *Pool) NewConns(mode connMode, pgConnString ...string) error {
+	d.mu.Lock()
+	defer d.mu.Unlock()
+
+	for _, s := range pgConnString {
+		if err := d.NewConn(mode, s); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
 func (d *Pool) newConn(mode connMode, pgConnString string) (q *conn, err error) {
 	var pgxPool *pgxpool.Pool