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What advantage does AWS Lambda provide when used with DynamoDB in event-driven architectures?

easy🧠 Conceptual Q1 of 15
DynamoDB - with Serverless
What advantage does AWS Lambda provide when used with DynamoDB in event-driven architectures?
AIt requires manual polling of DynamoDB tables to detect changes
BIt enables automatic execution of code in response to DynamoDB data changes without server management
CIt stores data backups automatically for DynamoDB tables
DIt replaces the need for DynamoDB Streams entirely
Step-by-Step Solution
Solution:

  1. Step 1: Understand Lambda's event-driven model

    AWS Lambda runs code automatically when triggered by events, such as DynamoDB Streams.

  2. Step 2: Recognize DynamoDB Streams role

    DynamoDB Streams capture table data changes and can trigger Lambda functions without polling.

  3. Final Answer:

    It enables automatic execution of code in response to DynamoDB data changes without server management -> Option B

  4. Quick Check:

    Lambda triggers on events, no manual polling needed [OK]
Quick Trick: Lambda runs code automatically on DynamoDB changes [OK]
Common Mistakes:
MISTAKES
  • Thinking Lambda replaces DynamoDB Streams
  • Assuming manual polling is required
  • Confusing backup features with Lambda triggers

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