Amazon
SOA-C02 · Question #528
An ecommerce company uses an Amazon ElastiCache for Redis cluster for in-memory caching of popular product queries on a shopping website. The cache eviction policy is randomly evicting keys whether…
The correct answer is D. Change the eviction policy to evict the least frequently used keys. https://docs.aws.amazon.com/whitepapers/latest/database-caching-strategies-using- redis/evictions.html
Submitted by neha2k· Mar 30, 2026Cost and Performance Optimization
Question
An ecommerce company uses an Amazon ElastiCache for Redis cluster for in-memory caching of popular product queries on a shopping website. The cache eviction policy is randomly evicting keys whether or not a TTL is set. A SysOps administrator must improve the cache hit ratio without increasing costs. Which solution will meet these requirements?
Options
- AAdd another node to the ElastiCache cluster.
- BIncrease the ElastiCache TTL value.
- CChange the eviction policy to randomly evict keys that have a TTL set.
- DChange the eviction policy to evict the least frequently used keys.
How the community answered
(27 responses)- A15% (4)
- B7% (2)
- C7% (2)
- D70% (19)
Explanation
https://docs.aws.amazon.com/whitepapers/latest/database-caching-strategies-using- redis/evictions.html
Topics
#ElastiCache Redis#eviction policy#cache hit ratio#LFU
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