Elasticsearch - Performance and Scaling
Which Elasticsearch feature helps reduce search latency by storing frequently accessed data in memory?
Which Elasticsearch feature helps reduce search latency by storing frequently accessed data in memory?
easy🧠 Conceptual Q1 of Q15
Step-by-Step Solution
Solution:
Step 1: Understand caching in Elasticsearch
Fielddata cache stores field values in memory to speed up sorting and aggregations.Step 2: Identify the feature that reduces latency
Fielddata cache directly reduces search latency by avoiding disk reads.Final Answer:
Fielddata cache -> Option CQuick Check:
Caching = Fielddata cache [OK]
Quick Trick: Caching frequently accessed data reduces search latency [OK]
Common Mistakes:
MISTAKES- Confusing snapshot repository with caching
- Thinking index lifecycle management affects latency directly
- Assuming cluster state API improves search speed
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