Understanding how GUIDs / UUIDs impact database performance, index behavior, and storage efficiency is crucial for building scalable applications. This guide covers indexing strategies, fragmentation issues, database-specific considerations and practical optimization techniques.
For database primary keys, prefer GUID / UUID v7 (time-ordered) over GUID / UUID v4 (random) to minimize index fragmentation and improve insert performance in B-tree indexes.
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[ 3.1 ms ] story [ 15.6 ms ] threadFor database primary keys, prefer GUID / UUID v7 (time-ordered) over GUID / UUID v4 (random) to minimize index fragmentation and improve insert performance in B-tree indexes.