Hey guys I am using NextJS 14.2 App Router and I am trying to basically cache the response of an API route UNLESS my admin dashboard pushed updates to the data, if so then I wnat the cache to reset. I thought I did this but in production, the cache never updates no matter how many times I update data.

Essentially I am making a product deal eCommerce app so I need to ensure the data I am serving is the latest as if a deal ends the customer needs to know.

Relevant code:

Frontend Script

document.addEventListener("DOMContentLoaded", function () {
  // Fetch the flash deals data from the API
  fetch("https://xxxxx/api/flash-deals")
    .then(response => response.json())
    .then(data => {
      const dealProductIds = data.map(deal => deal.productId);
      const dealsInfo = data.reduce((acc, deal) => {
        acc[deal.productId] = deal;
        return acc;
      }, {});
...

GET API In Question

import { NextRequest, NextResponse } from "next/server";
import { PrismaClient } from "@prisma/client";

const prisma = new PrismaClient();

export async function GET(request: NextRequest) {
  try {
    const flashDeals = await prisma.flashDeal.findMany({
      ...

    const cacheOptions = {
      revalidate: 3600,
      staleWhileRevalidate: true,
      tags: ["flash-deals"],
    };

    return NextResponse.json(
      ...
      {
        headers: {
          "Cache-Control": `max-age=${cacheOptions.revalidate}, stale-while-revalidate=${cacheOptions.staleWhileRevalidate}`,
        },
      },
    );
  } ...

Update Server Action which should update after run.

"use server";
import { PrismaClient } from "@prisma/client";
import { revalidatePath } from "next/cache";

...

export async function updateFlashDeal(flashDeal: FlashDeal) {
  update logic...

    revalidatePath("/");

    return {
      success: true,
      message: "Flash Deal updated successfully!",
    };
  } catch (error) {
    console.error("Failed to update Flash Deal:", error);
    return {
      success: false,
      message: "Failed to update Flash Deal. Please try again.",
    };
  }
}