How can you optimize a Lambda function that writes multiple items to DynamoDB to reduce the number of API calls?

hard🚀 Application Q9 of 15

DynamoDB - with Serverless

AWrite items to a temporary file and upload later

BUse batchWrite operation to write multiple items in one request

CCall put operation sequentially for each item

DUse scan operation before each put to check duplicates

Step-by-Step Solution

Solution:

Step 1: Identify batch operations in DynamoDB
DynamoDB supports batchWrite to write multiple items in a single API call.
Step 2: Compare with sequential puts
Sequential puts cause many calls; batchWrite reduces overhead and latency.
Final Answer:
Use batchWrite operation to write multiple items in one request -> Option B
Quick Check:
BatchWrite reduces API calls for multiple writes [OK]

Quick Trick: Use batchWrite for multiple item writes in one call [OK]

Common Mistakes:

MISTAKES

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