exclude system datapoints from saving

dbm/dbmHandler.go

@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"os"
+	"strings"
 	"sync"
 	"time"
 
@@ -87,6 +88,12 @@ func (d *DBMHandler) SaveDb() (err error) {
 	defer f.Close()
 
 	for _, dp := range d.DB.GetAllDatapoints(0) {
+		//exclude System datapoints from saving
+		//System datapoints are used for internal purposes and should not be saved in the database
+		if strings.Contains(dp.Path, "System:") {
+			continue
+		}
+
 		b, er := json.Marshal(dp)
 		if er != nil {
 			return er