Elasticsearch - Performance and Scaling
Which of the following is the correct syntax to clear the query cache for an index named
products using Elasticsearch REST API?Which of the following is the correct syntax to clear the query cache for an index named products using Elasticsearch REST API?
easy📝 Syntax Q12 of Q15
Step-by-Step Solution
Solution:
Step 1: Recall the correct REST API endpoint for clearing cache
Elasticsearch uses_cache/clearwith query parameters to specify cache types.Step 2: Identify the correct parameter for query cache
The query cache is cleared by adding?query=trueto the endpoint.Final Answer:
POST /products/_cache/clear?query=true -> Option AQuick Check:
Use query=true parameter to clear query cache [OK]
Quick Trick: Use query=true parameter to clear query cache [OK]
Common Mistakes:
MISTAKES- Using wrong endpoint like _clear_cache
- Confusing fielddata cache with query cache
- Missing query parameter in URL
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