Elasticsearch - Performance and Scaling
You have a slow Elasticsearch search query using multiple wildcard patterns. Which change will most likely improve performance?
You have a slow Elasticsearch search query using multiple wildcard patterns. Which change will most likely improve performance?
medium📝 Debug Q6 of Q15
Step-by-Step Solution
Solution:
Step 1: Analyze wildcard query performance
Wildcard queries are expensive, especially with leading wildcards.Step 2: Use prefix queries for better performance
Prefix queries are faster because they only match from the start of terms.Final Answer:
Replace wildcard queries with prefix queries where possible -> Option AQuick Check:
Prefix queries faster than wildcards [OK]
Quick Trick: Use prefix queries instead of wildcards for speed [OK]
Common Mistakes:
MISTAKES- Increasing shards without need
- Using script queries which are slower
- Disabling caching reduces performance
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