Given a DAX cluster caching an item with key 'User123', what happens when a GetItem request for 'User123' is made?

medium📝 query result Q4 of 15

DynamoDB - Cost Optimization and Monitoring

AThe item is returned from the DAX cache, reducing latency

BThe request bypasses DAX and queries DynamoDB directly

CThe item is deleted from the cache before returning

DThe request causes a cache miss and returns an error

Step-by-Step Solution

Solution:

Step 1: Understand DAX cache hit behavior
If the item is cached, DAX returns it directly to reduce latency.
Step 2: Eliminate incorrect behaviors
DAX does not bypass cache on hit, delete cached items, or error on cache hit.
Final Answer:
The item is returned from the DAX cache, reducing latency -> Option A
Quick Check:
Cache hit returns item fast = The item is returned from the DAX cache, reducing latency [OK]

Quick Trick: Cache hit returns item fast from DAX, no DynamoDB call [OK]

Common Mistakes:

MISTAKES

Master "Cost Optimization and Monitoring" in DynamoDB

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More DynamoDB Quizzes