Given an RDS primary instance with 1000 read requests per second and a read replica added, what is the expected behavior?

medium📝 service behavior Q4 of 15

AWS - RDS and Relational Databases

AThe read replica handles write requests only

BWrite requests increase on the read replica

CThe primary instance handles all read and write requests

DRead requests are distributed, reducing load on the primary instance

Step-by-Step Solution

Solution:

Step 1: Understand read replica behavior
Read replicas serve read queries, offloading the primary instance.
Step 2: Analyze request distribution
Reads get distributed; writes remain on the primary. Replica does not handle writes.
Final Answer:
Read requests are distributed, reducing load on the primary instance -> Option D
Quick Check:
Read replicas distribute reads = A [OK]

Quick Trick: Read replicas only serve reads, not writes [OK]

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