Too many messages

I have Sinotrack ST-901 tracking device and i have a problemthat at some time during the day that its tracking it somehow lags and send tousands of messages from the same place and same timestamp. Then I have problem with the Replay function that it lags when i try to move the map or zoom I presume from too many messages. Can it be that the tracker looses signal either gps or cellular and tries to resend and sends tousands of messages ? or what seems to be the issue. Below are pictures from my traccar dashboard.

here are som pictures

Below u can see that roughly 8000 messages are from the same timestamp. Can someone explain this to me? thanks

You should check logs to see what's actually happening.

Here are the screens of the logs in the first picture it starts. at 05:21:47 it starts sending over and over the same message.

Here you can see after roughly 2 hours its sending the same data but also current data as marked in the picture. So it somehow loops the same position at that particular time over the whole day along with normal data thats being updated normally. But once a day there is one bug like this and causes too many messages.

Also idk what the other traffic is. just some bots querying my server cause its open to public??

I can see that the HEX is different every time, so it's not like it's sending the same message over and over. Which probably means that this is a device issue.

Okay thanks. Thought the Sinotrack devices were reliable. Ill invest in Teltonika I think.

Will this work?

<entry key='filter.duplicate'>true</entry>

It will filter by fix time, so if it's the same, it will be filtered out.

Tried it and tis still the same idk why. it should filter the messages but u can see in the picutre that in the log the time is the same and its still showing up in the traccar dashboard.

Actually sorry, I forgot that we're checking attributes now as well.

Would this work in the attribute field in the device settings?

(function() {
      var last = position.last(); // Get last saved position
      if (last &&
          position.getLatitude() === last.getLatitude() &&
          position.getLongitude() === last.getLongitude() &&
          position.getTime().getTime() === last.getTime().getTime()) {
          return false; // Skip this position
      }
      return true; // Accept the position
  })();

Not sure I understand where you plan to put this.

That was my mistake that is not possible. You said that algorithm is checking attributes too. I deleted the attributes checking in the FilterHandler.java and the filter is only checking time now like u see in the code. I built it and changed the .jar file and restarted traccar. It is filtering some duplicated but majority of them are still not filtered out.

private boolean filterDuplicate(Position position, Position last) {
        if (filterDuplicate && last != null) {
            if (position.getFixTime().equals(last.getFixTime())) {
                return true;
            }
        }
        return false;
    }

I also added these in the config file.

<entry key='filter.enable'>true</entry>
<entry key='filter.duplicate'>true</entry>