Topic 1 Question 391
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?
Add another node to the ElastiCache cluster.
Increase the ElastiCache TTL value.
Change the eviction policy to randomly evict keys that have a TTL set.
Change the eviction policy to evict the least frequently used keys.
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- 正解だと思う選択肢: D
Ways to Improve Cache Hit Ratio for Cost Reduction: To improve your CHR, consider optimizing your caching strategy. This could involve fine-tuning TTL (Time-To-Live) parameters, implementing LRU (Least Recently Used) eviction policies, or increasing cache size.
https://www.dragonflydb.io/guides/elasticache-cost-optimization
👍 1nharaz2024/01/01 - 正解だと思う選択肢: D
"The cache eviction policy is randomly evicting keys whether or not a TTL is set." is a sign that currently the eviction policy "allkeys-random" is in use. As we want to drop frequently used entries the answer should be "allkeys-lfu" for evicting least frequently used entries.
👍 1Kipalom2024/01/01
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