UUID Generator
Generate random UUIDs (Universally Unique Identifiers) easily.
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit identifier used to uniquely identify information in computer systems. UUIDs are widely used in databases, distributed systems, and software applications to avoid collisions and maintain uniqueness without central coordination.
Types of UUIDs
- UUID v1: Based on time and machine identifiers. Useful when ordering matters.
- UUID v3: Generated using MD5 hashing of a namespace and a name.
- UUID v4: Randomly generated. The most commonly used UUID type.
- UUID v5: Similar to v3, but uses SHA-1 hashing.
Why Use UUIDs?
UUIDs ensure uniqueness across different systems and applications, making them essential for large-scale applications, APIs, distributed databases, and software where uniqueness cannot be guaranteed by auto-increment IDs alone.
Examples
UUID v1: 6ba7b810-9dad-11d1-80b4-00c04fd430c8
UUID v4: f47ac10b-58cc-4372-a567-0e02b2c3d479