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Alibaba ACA-Cloud1 Exam - Topic 8 Question 102 Discussion

Which of the following scenarios is applicable to use RDS read-only instances?
B) Reduces the read pressure on the RDS primary instance.
A) Reduces the write pressure on the RDS primary instance.
C) Implements data backtracking for the last two days.
D) Improves RDS storage capabilities.

Alibaba ACA-Cloud1 Exam - Topic 8 Question 102 Discussion

Actual exam question for Alibaba's ACA-Cloud1 exam
Question #: 102
Topic #: 8
[All ACA-Cloud1 Questions]

Which of the following scenarios is applicable to use RDS read-only instances?

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Suggested Answer: B

ApsaraDB RDS for MySQL is a cloud-based relational database service that provides secure, cost-effective, and scalable database solutions for various applications. RDS for MySQL supports creating read-only instances that are synchronized with the primary instance in real time. Read-only instances can handle read requests from applications and reduce the read pressure on the primary instance. This can improve the performance and availability of the database system. Read-only instances can also be used for scenarios such as report analysis, data backup, and disaster recovery.


Overview of read-only ApsaraDB RDS for MySQL instances

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Alibaba Cloud Computing Exam Question 2022

by Denise at May 14, 2026, 08:35 AM

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Dahlia
3 days ago
Totally agree, B is spot on too!
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Lavonna
8 days ago
A) Reduces the write pressure on the RDS primary instance.
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Cherrie
13 days ago
I thought read replicas were just for scaling reads!
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Lanie
18 days ago
D doesn't make sense, it's not about storage.
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Marget
23 days ago
Wait, can RDS really do data backtracking?
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Ilona
29 days ago
Totally agree, they help with read pressure.
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Lettie
1 month ago
A and B are spot on!
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Cammy
1 month ago
I’m confused about the options. I thought read-only instances were just for scaling reads, but I can see how A might apply too.
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Charlesetta
1 month ago
I practiced a similar question, and I believe the main purpose of read-only instances is to offload reads, so B seems right to me.
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Coletta
2 months ago
I’m not entirely sure, but I remember something about read replicas helping with write pressure too. Maybe A is also relevant?
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Kattie
3 months ago
I think read-only instances are mainly about reducing the read pressure on the primary instance, so I’d go with B.
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