Dynamodb is not storing all the received IoT core data

Question

Hi,

I use my IoT core to act as an MQTT broker to collect sensor data.
This part works fine and everything looks correct when testing it in the test environment. The IoT core passes the data to a dynamodb table and here is where it goes wrong. I'm not receiving all the data as the IoT core does. I should have every 10-40 seconds some data but the dynamodb register sometimes with a gap of 5 minutes and other times it has gaps from over a couple of hours. Is there some kind of setting which I need to change or how to fix this that I'm not losing any data while transporting it to Dynamodb?

Data comes in this format on the test explorer:

```
{
  "GEG_BUF2_LT01_M3": "477.4305",
  "GEG_BIO1_TT_01": "8.709491",
  "STATUS_BIO2_P_02": "0",
  "STATUS_BIO1_S_01": "0",
  "STATUS_BIO2_P_01": "0",
  "M_alarm": "0",
  "M_nieuw_alarm": "0",
  "time": "2022-12-04 20:48:01"
}
```

![Dynamodb table](/media/postImages/original/IMgu0dcR4gRcOMFZArST_wTw)

Answer

Not sure if you are using IOT rules but please review the following resources

1. [Tutorial: Storing device data in a DynamoDB table](https://docs.aws.amazon.com/iot/latest/developerguide/iot-ddb-rule.html)
2. [The DynamoDB (dynamoDB) action writes all or part of an MQTT message to an Amazon DynamoDB table.](https://docs.aws.amazon.com/iot/latest/developerguide/dynamodb-rule-action.html)

Additionally , the best way to [debug](https://docs.aws.amazon.com/iot/latest/developerguide/diagnosing-rules.html) issues you are having with rules is to use CloudWatch Logs. When you enable CloudWatch Logs for AWS IoT, you can see which rules are triggered and their success or failure. You also get information about whether WHERE clause conditions match. For more information, see [Monitor AWS IoT using CloudWatch Logs](https://docs.aws.amazon.com/iot/latest/developerguide/cloud-watch-logs.html).

Dynamodb is not storing all the received IoT core data

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