AWS - Lambda
You configured a DynamoDB stream as a trigger for your Lambda function, but the function is not invoked when the table changes. What is the most likely cause?
You configured a DynamoDB stream as a trigger for your Lambda function, but the function is not invoked when the table changes. What is the most likely cause?
medium📝 Debug Q14 of 15
Step-by-Step Solution
Solution:
Step 1: Check DynamoDB stream status
For Lambda to trigger, the DynamoDB stream must be enabled on the table.Step 2: Confirm stream is active
If the stream is disabled or not enabled, no events are generated to invoke Lambda.Final Answer:
The DynamoDB stream is disabled or not enabled -> Option AQuick Check:
DynamoDB stream must be enabled for Lambda trigger = A [OK]
Quick Trick: Ensure DynamoDB stream is enabled to trigger Lambda [OK]
Common Mistakes:
- Ignoring stream enablement status
- Assuming empty table stops triggers
- Blaming Lambda code without checking stream
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