UUID Generator

A UUID (Universally Unique Identifier) is a 128-bit identifier used to uniquely identify objects in software. It is commonly used for database primary keys, session IDs, and API key generation.

What is UUID v4?

UUID v4 is the most widely used UUID version, generating 122 random bits. The probability of collision is astronomically low (approximately 1/2^61 for 1 billion UUIDs), making it practically unique.

Why do I need a UUID?

UUIDs are useful for generating unique IDs in distributed systems without a central server. Unlike auto-incrementing numbers (1, 2, 3...), UUIDs are unpredictable, providing a security advantage.

Where are UUIDs used?

UUIDs are used as database primary keys, unique file names, session tokens, API request tracking IDs, and transaction IDs in distributed systems.

What is UUID v4?

UUID v4 is the most widely used UUID version, generating 122 random bits. The probability of collision is astronomically low (approximately 1/2^61 for 1 billion UUIDs), making it practically unique.

Why do I need a UUID?

UUIDs are useful for generating unique IDs in distributed systems without a central server. Unlike auto-incrementing numbers (1, 2, 3...), UUIDs are unpredictable, providing a security advantage.

Where are UUIDs used?

UUIDs are used as database primary keys, unique file names, session tokens, API request tracking IDs, and transaction IDs in distributed systems.