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Which of the following is a correct Elasticsearch setting to improve performance during growth?

easy📝 Syntax Q12 of Q15
Elasticsearch - Performance and Scaling
Which of the following is a correct Elasticsearch setting to improve performance during growth?
A<code>index.max_result_window: 1000000</code>
B<code>index.refresh_interval: 1s</code>
C<code>index.number_of_shards: 1</code>
D<code>index.number_of_replicas: 0</code>
Step-by-Step Solution
Solution:

  1. Step 1: Review each setting's effect

    Setting replicas to 0 disables redundancy but can improve indexing speed temporarily.

  2. Step 2: Identify correct tuning syntax

    index.number_of_replicas: 0 uses correct syntax and is a common tuning step to improve write performance during growth.

  3. Final Answer:

    index.number_of_replicas: 0 -> Option D

  4. Quick Check:

    Replica count 0 = faster indexing [OK]
Quick Trick: Replicas 0 speeds indexing during growth [OK]
Common Mistakes:
MISTAKES
  • Using index.refresh_interval: 1s (default, slows bulk indexing)
  • Setting default index.number_of_shards: 1 (limits scaling for growth)
  • Setting max_result_window too high causing memory issues

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