You can use the generateSitemaps function to generate multiple sitemaps for your application.

Returns

The generateSitemaps returns an array of objects with an id property.

URLs

Your generated sitemaps will be available at /.../sitemap/[id].xml. For example, /product/sitemap/1.xml.

Example

For example, to split a sitemap using generateSitemaps, return an array of objects with the sitemap id. Then, use the id to generate the unique sitemaps.

import type { MetadataRoute } from 'next'
import { BASE_URL } from '@/app/lib/constants'

export async function generateSitemaps() {
  // Fetch the total number of products and calculate the number of sitemaps needed
  return [{ id: 0 }, { id: 1 }, { id: 2 }, { id: 3 }]
}

export default async function sitemap(props: {
  id: Promise<string>
}): Promise<MetadataRoute.Sitemap> {
  const id = await props.id
  // Google's limit is 50,000 URLs per sitemap
  const start = id * 50000
  const end = start + 50000
  const products = await getProducts(
    `SELECT id, date FROM products WHERE id BETWEEN ${start} AND ${end}`
  )
  return products.map((product) => ({
    url: `${BASE_URL}/product/${product.id}`,
    lastModified: product.date,
  }))
}

import { BASE_URL } from '@/app/lib/constants'

export async function generateSitemaps() {
  // Fetch the total number of products and calculate the number of sitemaps needed
  return [{ id: 0 }, { id: 1 }, { id: 2 }, { id: 3 }]
}

export default async function sitemap(props) {
  const id = await props.id
  // Google's limit is 50,000 URLs per sitemap
  const start = id * 50000
  const end = start + 50000
  const products = await getProducts(
    `SELECT id, date FROM products WHERE id BETWEEN ${start} AND ${end}`
  )
  return products.map((product) => ({
    url: `${BASE_URL}/product/${product.id}`,
    lastModified: product.date,
  }))
}

Version History

Source: docs/01-app/03-api-reference/04-functions/generate-sitemaps.mdx