6 min read
2026-03-01
UUID allows you to generate identifiers on the client side without accessing the database, which is critical for distributed systems.
Each service generates its IDs independently, without the risk of collisions between services.
The UUID in the URL hides the number of entries in the system - `/api/users/550e8400-...` is safer than `/api/users/42`.
The client generates the UUID before sending the request. When sent again, the server recognizes the duplicate.
Assign a UUID to each uploaded file to avoid name conflicts.
The request UUID links logs from different services into a single chain for debugging.
Mobile and desktop applications can create entries offline with UUIDs, syncing later without conflicts.
See also: Hash generator, Test data generator, Slug generator