Choosing the Right ID Format

import { uuidv7 } from 'uniku/uuid/v7'

const [first, second, third] = [uuidv7(), uuidv7(), uuidv7()]
console.log(first < second && second < third) // true

import { uuidv4 } from 'uniku/uuid/v4'

const ids = [uuidv4(), uuidv4(), uuidv4()]
// IDs are random - no predictable ordering

import { uuidv7 } from 'uniku/uuid/v7'

// In your database model
interface User {
  id: string // UUID v7
  email: string
  createdAt: Date
}

const user = {
  id: uuidv7(),
  email: '[email protected]',
  createdAt: new Date()
}

import { nanoid } from 'uniku/nanoid'

// Short URL
const shortUrl = `https://example.com/${nanoid(8)}`
// => https://example.com/V1StGXR8

// Invite code
const inviteCode = nanoid(12)
// => IRFa-VaY2bQj

import { cuid2 } from 'uniku/cuid2'

// API keys or tokens
const apiKey = cuid2()
// => pfh0haxfpzowht3oi213cqos

// Invoice numbers (not sequential)
const invoiceId = cuid2({ length: 16 })
// => tz4a98xxat4eqr3z

import { ulid } from 'uniku/ulid'

// Each microservice can generate IDs independently
const orderId = ulid()
const paymentId = ulid()

// IDs sort correctly even when generated on different servers

import { uuidv4 } from 'uniku/uuid/v4'

const id = uuidv4()
// => 550e8400-e29b-41d4-a716-446655440000