Unique ID Generation Strategies: Comprehensive Comparison

Dec 21, 2025 · 13 min read · Quick Reference Summary ID TypeSortableCoordinationBest For Auto-increment✅ Yes❌ RequiredSingle DB, simple apps UUID v4❌ No✅ NoneGeneral purpose, no ordering needs UUID v7✅ Yes✅ NoneModern default choice Snowflake✅ Yes⚠️ Worker IDHigh-throu...