How to find total hits on DynamoDB table

Question

I have a Lambda function that is hitting DynamoDB and getting values from there. I wanted to check if there is any way where I can see how many times lambda hits the DynamoDB table. I tried to see in CloudWatch but unable to find it.

What operation does the lambda use? query, scan, get item, or batch get item. — cementblocks, Oct 20 '20 at 17:46

score 0 · Accepted Answer · answered Oct 20 '20 at 14:56

There is no simple way to do it. You can use read/write capacity metrics for the table if the lambda is the only consumer of this table

Under Dynamodb -> you table -> Metrics, or from CW Metrics

And calculate a measurement of the actions according to this topic: How are consumed read capacity units calculated in DynamoDB query

Currently, AWS doesn't show these metrics that you asked for

score 0 · Answer 2 · answered Oct 20 '20 at 17:45

If you own the source code behind the Lambda, then you can get it to emit a metric everytime a DDB call is made (or when the DDB call fails).

You can read more about Custom metrics here https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/publishingMetrics.html

How to find total hits on DynamoDB table

2 Answers2