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.
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.