Universal Unique Identifier (UUID)

Overview

This page contains recommendations for using Universal Unique Identifier (UUID).

General

• Do not use UUID as a random value. UUID is a unique value, not random. There is no a way to guarantee randomness, especially for versions != 4.

• Do not use UUID as a session identifier.

• You can use a UUID as a unique value for objects, such as a bank card ID or upload file name.

UUID generation

Go

You can use the google/uuid package to generate UUID values in Go.

import "github.com/google/uuid"

func GenerateNewUUIDValue() string {
    return uuid.New().String()
}

Java

Use the java.util.UUID class to generate UUID values.

import java.util.UUID;

public static String generateUUIDv4() {
    return UUID.randomUUID().toString();
}

Node.js

Use the uuid package to generate UUID values.

import { v4 as uuidv4 } from 'uuid';
uuidv4();

Python

Use the uuid package to generate UUID values.

import uuid

def generate_uuid_v4() -> str:
    return str(uuid.uuid4())