Yumin Fish Harvest

Aug 15, 2026 · Backend Development

Choosing a Decentralized Distributed ID: UUIDv4 vs UUIDv7 vs ULID vs Nano ID

This article examines how traceId, eventId, and shareId differ in requirements and walks through a detailed comparison of UUIDv4, UUIDv7, ULID, and Nano ID—covering generation principles, ordering characteristics, storage impact, Java code examples, and practical guidance for selecting the right scheme.