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How do Server Actions fail revalidation in parallel routes?

November 28, 2025

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Server Actions invalidate caches via tags/paths, but parallel routes (@sidebar, @main) maintain separate caches; single revalidateTag('posts') only updates one slot, leaving others stale until navigation.

Example:

Code

'use server';
import { revalidateTag } from 'next/cache';

export async function updatePost(formData: FormData) {
  await db.post.update(formData);
  
  // Fix: Tag each parallel route slot
  revalidateTag(['@sidebar-posts', '@main-posts']);
}
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How do Server Actions fail revalidation in parallel routes?

Server Actions invalidate caches via tags/paths, but parallel routes (@sidebar, @main) maintain separate caches; single revalidateTag('posts') only updates one slot, leaving others stale until navigation.

Example:

Code

'use server';
import { revalidateTag } from 'next/cache';

export async function updatePost(formData: FormData) {
  await db.post.update(formData);
  
  // Fix: Tag each parallel route slot
  revalidateTag(['@sidebar-posts', '@main-posts']);
}