SAP-C02 Design for New Solutions Practice Question
A company is migrating a monolithic application to microservices on AWS. They have identified that some services require high-throughput, low-latency data sharing. Which AWS service should they use for this purpose?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Amazon ElastiCache for Redis
Amazon ElastiCache for Redis is an in-memory data store that provides microsecond latency and high throughput, making it ideal for data sharing between microservices. Option A is correct. Option B (Amazon RDS) is a relational database, not optimized for low-latency data sharing. Option C (Amazon S3) is object storage with higher latency. Option D (AWS Glue) is an ETL service, not suitable for real-time data sharing.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Amazon ElastiCache for Redis
Why this is correct
ElastiCache for Redis provides high-throughput, low-latency in-memory caching.
- ✗
Amazon RDS
Why it's wrong here
RDS is a relational database, not optimized for low-latency caching.
- ✗
Amazon S3
Why it's wrong here
S3 is object storage with higher latency.
- ✗
AWS Glue
Why it's wrong here
Glue is an ETL service, not for data sharing.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SAP-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SAP-C02 exam.