Why does revalidateTag work on local build but not in App Platform?

Code: Link

Output is as expected but the page only actually updates after two refreshes on the local build on my PC, and never on the hosted site.

src > app > api > revalidate > route.tsx

import { NextRequest, NextResponse } from 'next/server'
import { revalidateTag } from 'next/cache'

export async function GET(request: NextRequest) {
    const tag = request.nextUrl.searchParams.get('tag')
    revalidateTag(tag ?? "revalidate")
    return NextResponse.json({ revalidated: true, now: })

src > app > lib > cms.tsx

import type { PortfolioItem, SocialMediaLink } from '@/lib/types.d'
import 'server-only'

const baseUrl = process.env.CMS_API_URL

export const getAllPortfolioEntries = async () => {
    try {
        const response = await fetch(baseUrl + 'portfolio-entries?populate=*', { next: { tags: ['revalidate'] } });

        if (!response.ok) {
            throw new Error(response.statusText)

        const entries = await response.json()

        if (entries === null) {
            throw new Error('No entries found')

        return as PortfolioItem[]
    } catch (error) {


$  curl https://domain/api/revalidate?tag=revalidate
>  {"revalidated":true,"now":16867717638}
$  curl https://localhost:30000/api/revalidate?tag=revalidate
>  {"revalidated":true,"now":16867717638}

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Bobby Iliev
Site Moderator
Site Moderator badge
July 2, 2023
Accepted Answer

Hi there,

It sounds like that this might be a caching problem. What you could try is, in your fetch request, consider adding the appropriate cache control headers, for example, ‘no-store’ to prevent the browser or a CDN from caching the response.

You can add cache control headers to your fetch request like so:

const response = await fetch(baseUrl + 'portfolio-entries?populate=*', { 
    next: { tags: ['revalidate'] },
    headers: { 'Cache-Control': 'no-store' }

Quick overview:

  • You’re adding a headers field to the fetch options object.
  • Inside the headers field, you’re setting Cache-Control to no-store.

This tells any caches (like a browser’s local cache or a CDN) not to store the response. Each time you make the same request, it should go all the way to the server rather than being served from a cache, ensuring you get the most recent data.

Let me know how it goes!



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