Course lesson
The waitUntil function allows us to continue performing work in our Cloudflare Worker, after a response has been sent back to the client.
The waitUntil function allows us to continue performing work in our Cloudflare Worker, after a response has been sent back to the client.
In this lesson, we modify the revalidate route to send a response immediately, and then continue on to fetch new data and refresh our KV store.
Finally, we use the Thunder Client extension to simulate a POST request to the revalidate route, and confirm that this receives a response before the cache is updated.
Update Revalidate route to respond immediately
router.post(
"/revalidate",
withContent,
async (request, { SUPABASE_URL, SUPABASE_ANON_KEY, ARTICLES }, context) => {
const updateCache = async () => {
const { type, record, old_record } = request.content;
const supabase = createClient(SUPABASE_URL, SUPABASE_ANON_KEY);
if (type === "INSERT" || type === "UPDATE") {
await writeTo(ARTICLES, `/articles/${record.id}`, record);
}
if (type === "DELETE") {
await ARTICLES.delete(`/articles/${old_record.id}`);
}
const { data: articles } = await supabase.from("articles").select("*");
await writeTo(ARTICLES, "/articles", articles);
console.log("updated cache");
};
context.waitUntil(updateCache());
console.log("sending response");
return json({ received: true });
}
);Run wrangler development server
npx wrangler devCourse lesson
The waitUntil function allows us to continue performing work in our Cloudflare Worker, after a response has been sent back to the client.