For a globally distributed application, how can AWS read replicas be architected to optimize read latency across multiple regions?

hard📝 Architecture Q8 of 15

AWS - RDS and Relational Databases

AConfigure read replicas only in the region with the highest write traffic

BUse a single read replica in the primary region and route all reads through it

CDeploy read replicas in each target region and direct local read traffic to the nearest replica

DEnable multi-AZ on the primary database to automatically replicate reads globally

Step-by-Step Solution

Solution:

Step 1: Understand global read latency
Read latency improves when users access nearby replicas.
Step 2: Deploy replicas regionally
Creating read replicas in each region reduces cross-region latency.
Final Answer:
Deploy read replicas in each target region and direct local read traffic to the nearest replica -> Option C
Quick Check:
Single replica or multi-AZ do not optimize global read latency [OK]

Quick Trick: Place read replicas close to users for low latency [OK]

Common Mistakes:

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