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What is a key benefit of using DynamoDB Streams with AWS Lambda?

easy🧠 Conceptual Q2 of 15
DynamoDB - with Serverless
What is a key benefit of using DynamoDB Streams with AWS Lambda?
AIt lets Lambda directly modify DynamoDB table schemas
BIt enables Lambda to store logs inside DynamoDB Streams
CIt allows Lambda to react to data changes in DynamoDB tables in real time
DIt requires manual polling of DynamoDB tables by Lambda
Step-by-Step Solution
Solution:

  1. Step 1: Understand DynamoDB Streams role

    DynamoDB Streams capture table data changes as events.

  2. Step 2: Lambda reacts to these events

    Lambda functions can be triggered immediately when these events occur, enabling real-time processing.

  3. Final Answer:

    It allows Lambda to react to data changes in DynamoDB tables in real time -> Option C

  4. Quick Check:

    Real-time event trigger = B [OK]
Quick Trick: Streams trigger Lambda instantly on data changes [OK]
Common Mistakes:
MISTAKES
  • Confusing Streams with schema modification
  • Thinking Streams store logs
  • Assuming Lambda must poll tables manually

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