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‎test/development/app-dir/cache-components-dev-warmup/app/apis/[param]/page.tsx‎

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import { cookies, headers } from 'next/headers'
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import { CachedData } from '../../data-fetching'
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import { connection } from 'next/server'
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import { Suspense } from 'react'
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const CACHE_KEY = __dirname + '/__PAGE__'
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export default function Page({ params, searchParams }) {
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return (
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<main>
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<p>
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This page checks whether runtime/dynamic APIs resolve in the correct
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stage (regardless of whether we had a cache miss or not)
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</p>
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<CachedData cacheKey={CACHE_KEY} label="page" />
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<LogAfter label="--- dynamic stage ---" api={() => connection()} />
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{/* Runtime */}
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<LogAfter label="cookies" api={() => cookies()} />
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<LogAfter label="headers" api={() => headers()} />
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<LogAfter
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label="params"
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api={() => {
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console.log('page - got params promise', params['id'])
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return params
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}}
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/>
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<LogAfter label="searchParams" api={() => searchParams} />
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{/* Dynamic */}
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<LogAfter label="connection" api={() => connection()} />
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</main>
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)
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}
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function LogAfter({ label, api }: { label: string; api: () => Promise<any> }) {
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return (
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<Suspense fallback={`Waiting for ${label}...`}>
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<LogAfterInner label={label} api={api} />
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</Suspense>
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)
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}
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async function LogAfterInner({
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label,
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api,
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}: {
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label: string
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api: () => Promise<any>
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}) {
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await api()
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console.log(`after ${label}`)
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return null
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}

‎test/development/app-dir/cache-components-dev-warmup/app/data-fetching.ts‎

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‎test/development/app-dir/cache-components-dev-warmup/app/data-fetching.tsx‎

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export async function fetchCachedRandom(cacheKey: string) {
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return fetchCached(
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`https://next-data-api-endpoint.vercel.app/api/random?key=${encodeURIComponent('cached-' + cacheKey)}`
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)
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}
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export async function fetchCached(url: string) {
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const response = await fetch(url, { cache: 'force-cache' })
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return response.text()
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}
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export async function getCachedData(_key: string) {
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'use cache'
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await new Promise((r) => setTimeout(r))
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return Math.random()
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}
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export async function CachedData({
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label,
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cacheKey,
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}: {
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label: string
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cacheKey: string
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}) {
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const data = await getCachedData(cacheKey)
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console.log(`after cache read - ${label}`)
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return (
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<dl>
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<dt>Cached Data</dt>
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<dd>{data}</dd>
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</dl>
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)
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}
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export async function CachedFetch({
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label,
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cacheKey,
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}: {
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label: string
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cacheKey: string
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}) {
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const data = await fetchCachedRandom(cacheKey)
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console.log(`after cached fetch - ${label}`)
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return (
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<dl>
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<dt>Cached Fetch</dt>
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<dd>{data}</dd>
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</dl>
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)
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}
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export async function UncachedFetch({
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label,
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cacheKey,
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}: {
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label: string
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cacheKey: string
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}) {
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const response = await fetch(
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`https://next-data-api-endpoint.vercel.app/api/random?key=${encodeURIComponent('uncached-' + cacheKey)}`
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)
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console.log(`after uncached fetch - ${label}`)
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const data = await response.text()
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return (
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<dl>
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<dt>Uncached Fetch</dt>
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<dd>{data}</dd>
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</dl>
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)
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}

‎test/development/app-dir/cache-components-dev-warmup/app/layout.tsx‎

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import { fetchCached, getCachedData } from './data-fetching'
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export default function Root({ children }: { children: React.ReactNode }) {
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return (
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<html>
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<body>
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{children}
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<section>
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<h1>Layout</h1>
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<p>This data is from the root layout</p>
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<FetchingComponent />
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<CachedFetchingComponent />
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<CachedDataComponent />
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</section>
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</body>
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<body>{children}</body>
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</html>
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)
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}
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async function CachedFetchingComponent() {
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const data = await fetchCached(
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'https://next-data-api-endpoint.vercel.app/api/random?key=cachedlayout'
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)
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console.log('after cached layout fetch')
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return (
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<dl>
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<dt>
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Cached Fetch
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(https://next-data-api-endpoint.vercel.app/api/random?key=cachedlayout)
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</dt>
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<dd>{data}</dd>
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</dl>
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)
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}
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async function FetchingComponent() {
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const response = await fetch(
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'https://next-data-api-endpoint.vercel.app/api/random?key=uncachedlayout'
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)
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console.log('after uncached layout fetch')
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const data = await response.text()
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return (
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<dl>
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<dt>
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Uncached Fetch
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(https://next-data-api-endpoint.vercel.app/api/random?key=uncachedlayout)
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</dt>
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<dd>{data}</dd>
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</dl>
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)
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}
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async function CachedDataComponent() {
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const data = await getCachedData('layout')
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console.log('after layout cache read')
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return (
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<dl>
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<dt>Cached Data</dt>
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<dd>{data}</dd>
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</dl>
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)
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}

‎test/development/app-dir/cache-components-dev-warmup/app/loading.tsx‎

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‎test/development/app-dir/cache-components-dev-warmup/app/page.tsx‎

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‎test/development/app-dir/cache-components-dev-warmup/app/private-cache/data-fetching.tsx‎

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export async function PrivateCachedData({
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label,
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cacheKey,
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}: {
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label: string
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cacheKey: string
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}) {
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const data = await getPrivateCachedData(cacheKey)
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console.log(`after private cache read - ${label}`)
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return (
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<dl>
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<dt>Private Cached Data (Page)</dt>
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<dd>{data}</dd>
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</dl>
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)
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}
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async function getPrivateCachedData(_key: string) {
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'use cache: private'
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await new Promise((r) => setTimeout(r))
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return Math.random()
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}

‎test/development/app-dir/cache-components-dev-warmup/app/private-cache/layout.tsx‎

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import { Suspense } from 'react'
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import { UncachedFetch, CachedData } from '../data-fetching'
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import { PrivateCachedData } from './data-fetching'
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const CACHE_KEY = '/private-cache/__LAYOUT__'
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export default function Layout({ children }: { children: React.ReactNode }) {
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return (
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<>
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{children}
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<section>
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<h1>Layout</h1>
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<p>This data is from a layout</p>
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<CachedData label="layout" cacheKey={CACHE_KEY} />
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<Suspense fallback="Loading private cache...">
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<PrivateCachedData label="layout" cacheKey={CACHE_KEY} />
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</Suspense>
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<Suspense fallback="Loading uncached fetch...">
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<UncachedFetch label="layout" cacheKey={CACHE_KEY} />
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</Suspense>
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</section>
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</>
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)
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}

‎test/development/app-dir/cache-components-dev-warmup/app/private-cache/page.tsx‎

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import { Suspense } from 'react'
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import { CachedData, UncachedFetch } from '../data-fetching'
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import { PrivateCachedData } from './data-fetching'
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const CACHE_KEY = '/private-cache/__PAGE__'
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export default async function Page() {
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return (
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<main>
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<h1>Warmup Dev Renders - private cache</h1>
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<CachedData label="page" cacheKey={CACHE_KEY} />
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<Suspense fallback="Loading private cache...">
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<PrivateCachedData label="page" cacheKey={CACHE_KEY} />
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</Suspense>
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<Suspense fallback="Loading uncached fetch...">
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<UncachedFetch label="page" cacheKey={CACHE_KEY} />
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</Suspense>
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</main>
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)
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}

‎test/development/app-dir/cache-components-dev-warmup/app/revalidate/route.ts‎

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import { revalidatePath } from 'next/cache'
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export async function GET() {
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revalidatePath('/')
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export async function GET(request: Request) {
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const path = new URL(request.url).searchParams.get('path')!
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revalidatePath(path)
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return Response.json({ revalidated: true })
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}

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