Elasticsearch - Document Operations
You want to retrieve a document by ID but also handle the case when the document is missing without causing an error. Which approach is best?
You want to retrieve a document by ID but also handle the case when the document is missing without causing an error. Which approach is best?
hard🚀 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Understand GET by ID response behavior
GET by ID returns a JSON with 'found': false if the document is missing, no error thrown.Step 2: Compare with other methods
Search queries return hits but are slower; catching HTTP 404 is unnecessary; scroll API is for multiple docs.Final Answer:
Use GET /index/_doc/id and check if 'found' is true in the response -> Option BQuick Check:
Check 'found' field to detect missing document [OK]
Quick Trick: Check 'found' in GET response to detect missing docs safely [OK]
Common Mistakes:
MISTAKES- Expecting HTTP 404 error for missing documents
- Using search queries instead of GET by ID
- Using scroll API for single document retrieval
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