Generate Unique Identifiers
UUID generation tool with multiple formats
Single Generation: UUID v4
Bulk Generation: UUID v4
A UUID (Universally Unique Identifier) is a 128-bit identifier standardized by RFC 4122 that ensures uniqueness across space and time. UUIDs consist of 32 hexadecimal digits displayed in five groups separated by hyphens, following the pattern: 8-4-4-4-12 (for example: 550e8400-e29b-41d4-a716-446655440000).
Key Benefits:
- Distributed Systems: Generate unique identifiers without centralized coordination or database auto-increment
- Database Keys: Ideal for primary keys in distributed databases, preventing ID conflicts during replication
- Security: Random UUIDs (v4) are unpredictable, making them suitable for tokens and session identifiers
- Scalability: Multiple systems can generate UUIDs independently without collision risk
- Portability: Standardized format works across different platforms and programming languages
Common Use Cases:
- Primary keys in microservices architectures
- File and document identification systems
- Transaction and order tracking identifiers
- API request and session tracking
- Distributed cache keys
- Message queue identifiers
Different UUID versions serve different purposes: v1 includes timestamps and MAC addresses, v4 provides pure randomness, v5 generates deterministic UUIDs from names, and v7 offers time-ordered values optimized for database indexing.