Rest API - Pagination Patterns
Why is keyset pagination often preferred over offset pagination when designing REST APIs for large datasets?
Why is keyset pagination often preferred over offset pagination when designing REST APIs for large datasets?
easy🧠 Conceptual Q1 of Q15
Step-by-Step Solution
Solution:
Step 1: Understand offset pagination
Offset pagination uses OFFSET and LIMIT, which causes the database to scan and skip rows before returning results, leading to slower queries on large datasets.Step 2: Understand keyset pagination
Keyset pagination uses a cursor (like an ID or timestamp) to fetch the next set of rows without scanning skipped rows, improving performance.Final Answer:
Because it avoids performance degradation by not scanning skipped rows -> Option CQuick Check:
Keyset pagination uses cursor-based queries to improve speed [OK]
Quick Trick: Keyset pagination skips scanning rows, boosting speed [OK]
Common Mistakes:
MISTAKES- Confusing keyset pagination with offset pagination
- Assuming keyset pagination supports random page access
- Believing keyset pagination simplifies SQL queries
Master "Pagination Patterns" in Rest API
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