PCDE Practice Question: Manage a solution that can span multiple database technologies
A company is using Memorystore for Redis and wants to ensure data persistence in case of a failure. What is the recommended approach?
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
✓
Use Cloud Storage snapshots (export) or configure cross-region replication.
Memorystore for Redis does not support native persistence (AOF/RDB). For data durability, the recommendation is to use scheduled Cloud Storage snapshots or cross-region replication.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configure a standard tier instance, which provides automatic persistence.
Why it's wrong here
Standard tier provides high availability via replication, not persistence of data after deletion.
- ✗
Enable RDB persistence and configure the backup interval.
Why it's wrong here
Memorystore does not support RDB persistence natively.
- ✓
Use Cloud Storage snapshots (export) or configure cross-region replication.
Why this is correct
Correct. Use scheduled exports to Cloud Storage or cross-region replication for disaster recovery.
- ✗
Enable AOF persistence in Memorystore settings.
Why it's wrong here
Memorystore does not support AOF persistence.
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Written by Johnson Ajibi, MSc IT Security
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