How to invalidate router cache without using server actions, from a different page

[Sothatsit]

Hello, I have the following scenario:

1. I send a POST request to a server that does some processing and updates a database (the server is not the Next.js server).
2. The user can then navigate when they choose back to a dashboard page.
3. I need the dashboard to be refreshed with the new information from the database.

I can't find any way to achieve this. router.refresh() only refreshes the current page, and I have no way to remove the dashboard page from the router cache. How is this supposed to be achieved in the app router? I don't want to be forced to move my database requests into react-query GET requests just to avoid this caching behaviour.

[Sothatsit]

I have come upon a potential solution. I made a dumb server action that just calls revalidatePath:

"use server";
import {revalidatePath} from "next/cache";


export async function clearRouterCache() {
    revalidatePath("/");
}

However, this causes other issues:

1. It causes a page refresh.
2. Making a request to the server to clear your local cache is gross.