DynamoDB - with Serverless
Which AWS service is commonly used to trigger a Lambda function when a DynamoDB table is updated?
Which AWS service is commonly used to trigger a Lambda function when a DynamoDB table is updated?
easy🧠 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Identify event sources for Lambda
Lambda can be triggered by various AWS services, but DynamoDB Streams captures table changes.Step 2: Match DynamoDB updates to trigger
DynamoDB Streams sends change events to Lambda on table updates.Final Answer:
DynamoDB Streams -> Option CQuick Check:
Trigger source for DynamoDB updates = DynamoDB Streams [OK]
Quick Trick: DynamoDB Streams capture table changes for Lambda triggers [OK]
Common Mistakes:
MISTAKES- Choosing unrelated services like S3 or SNS
- Confusing CloudWatch Logs with event triggers
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