Hello there! I have a Nuxt 4 project hosted on Vercel, and with wildcard subdomains. I have a server/middleware.ts where I set these headers: setResponseHeader(event, 'x-subdomain', subdomain) setResponseHeader(event, 'Vary', 'header=x-subdomain') setResponseHeader(event, 'Cache-Tag', `${subdomai…

You need to use this helper function to add cache tags: import { addCacheTag } from '@vercel/functions'; Then you can purge by that tag later. See the docs here: [image] @vercel/functions API Reference (Node.js) Description: Adds one or more tags to a cached response, so that you can…

Hey, @labandotheque-9185 ! Could you try changing your header from Cache-Tag to Cache-Control with tags included, or use the x-vercel-cache-tags header instead: // Option 1: Use x-vercel-cache-tags header setResponseHeader(event, 'x-vercel-cache-tags', `${subdomain},subdomain`) // Option 2: Includ…

Thanks for your answer @pawlean ! I tried to add the mentioned headers (option 1, then option 2, then both), but the manual purge by tag still isn’t working: [purge-bandotheque] As you can see, the x-vercel-cache-tags header is correctly added, but when I try to purge using the osso tag, the ca…

@pawlean Just wanted to kindly check if anyone had a chance to look into this :slight_smile:

Hello, Following up on my previous post : I tried the suggestions from @pawlean (Vercel staff) Method 1: Project Settings > Caches What I tried: Use x-vercel-cache-tags header as suggested by @pawlean (but I can’t find any documentation about this header?): setResponseHeader(event, 'x-vercel-cach…

Hi @labandotheque-9185 , sorry for the delayed response. Let us try to debug this together. Have you tried waiting for a few minutes? Let’s try debugging from the dashboard side, Create your request, see if it’s a HIT. Choose a path that no one else uses during our test. Go to Dashboard and purge …

Hi @anshumanb , and thanks for your answer! I’m on a dev server so no one else use the tested url. I tried to purge the cache from the dashboard, then waiting 2 minutes, and 5 minutes, but still serve the old cache… [image]

Thanks for trying it out. Let me recreate it on one of my hobby projects and revert here.

Hi @labandotheque-9185 , I tried purging CDN caching and I had the same behavior as you. But, when I purged the data cache. The cache was immediately purged and got a age: 0 response. Edit: I was using Next.js I don’t think cache-tag caching is supported in Nuxt. Can you share the exact docs you fo…

Hi @anshumanb , and thanks for your help :slight_smile: Oh, surprising! I might be missing something about how caching works, but I don’t quite understand why Vercel respects cache headers for Next.js apps but not for Nuxt. It seems like a pretty standard behavior, no? I originally followed these…

Hi @labandotheque-9185 , I see. The docs you share are about cache purging. I’m curious where you learned about using the Cache-Tag header you mentioned in your original post. Because, I couldn’t find it in our docs. The Cache-Control headers are respected in all responses as per web standards. But,…

Manual purge cache by tag seems doesn't work

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devops-walkative (Walkative Tours) November 25, 2025, 1:50pm 19

So is there any way to purge cache on Nuxt.js app other than pushing a new deployment?

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Manual purge cache by tag seems doesn't work

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