Why does incorporating a random prefix in a DynamoDB partition key reduce the risk of hot partitions?

hard🧠 Conceptual Q10 of 15

DynamoDB - Access Patterns and Query Optimization

AIt reduces the total number of partitions DynamoDB creates

BIt increases the size of the partition key to improve indexing

CIt groups related items together for faster queries

DIt spreads write requests across multiple partitions by randomizing keys

Step-by-Step Solution

Solution:

Step 1: Understand partition key role
Partition keys determine data distribution across partitions.
Step 2: Effect of random prefix
Random prefixes distribute writes randomly, preventing concentration on single partitions.
Final Answer:
It spreads write requests across multiple partitions by randomizing keys -> Option D
Quick Check:
Random prefixes distribute load evenly [OK]

Quick Trick: Random prefixes distribute writes evenly [OK]

Common Mistakes:

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