UUID Generator
Generate unique identifiers
What is a UUID?
UUID (Universally Unique Identifier) or GUID (Globally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. The probability of generating duplicate UUIDs is negligibly small.
UUID Format
Standard UUID format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
Example: 550e8400-e29b-41d4-a716-446655440000
Common Use Cases
- Database Primary Keys: Unique identifiers for records
- API Development: Request IDs and session tokens
- Distributed Systems: Unique identifiers across systems
- File Naming: Guaranteed unique file names
- Transaction IDs: Tracking unique transactions
Advantages
- No central authority needed to generate IDs
- Can be generated anywhere, anytime
- Extremely low collision probability
- 128-bit ensures vast number of possibilities