Elasticsearch - Performance and Scaling
What does the number_of_replicas setting control in an Elasticsearch index?
What does the number_of_replicas setting control in an Elasticsearch index?
easy🧠 Conceptual Q1 of Q15
Step-by-Step Solution
Solution:
Step 1: Understand replica concept in Elasticsearch
Replicas are copies of primary shards used to increase availability and fault tolerance.Step 2: Identify what
This setting defines how many replica shards each primary shard has.number_of_replicascontrolsFinal Answer:
The number of copies of each shard for fault tolerance -> Option BQuick Check:
Replica setting = Copies of shards [OK]
Quick Trick: Replicas mean copies of shards for safety and speed [OK]
Common Mistakes:
MISTAKES- Confusing replicas with primary shards
- Thinking replicas control document count
- Mixing replicas with refresh interval
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