[Solved] Given this request to clear caches:POST /sales/_cache/clear { "fielddata": true }What will be the effect? | Elasticsearch

Elasticsearch - Performance and Scaling

Given this request to clear caches:

POST /sales/_cache/clear { "fielddata": true }

What will be the effect?

AAll caches for the <code>sales</code> index will be cleared

BOnly the fielddata cache for the <code>sales</code> index will be cleared

COnly the query cache for the <code>sales</code> index will be cleared

DThe request will fail due to invalid syntax

Step-by-Step Solution

Solution:

Step 1: Analyze the JSON body in the cache clear request
The body specifies "fielddata": true, which means only the fielddata cache will be cleared for the specified index.
Step 2: Understand cache clearing behavior
To clear all caches, the body would be empty or specify all caches. This request targets only fielddata cache.
Final Answer:
Only the fielddata cache for the sales index will be cleared -> Option B
Quick Check:
Fielddata: true clears only fielddata cache [OK]

Quick Trick: Specify cache type in JSON to clear only that cache [OK]

Common Mistakes:

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