About UUIDs
UUID Versions
- • v1 (Time-based) - Generated from timestamp and MAC address
- • v4 (Random) - Randomly generated, most common
Common Uses
- • Database primary keys
- • Session identifiers
- • Transaction IDs
- • Unique filenames
Format: xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx (M = version, N = variant)