Can I keep my cf worker sleep 180 seconds and then send response, I have paid plan

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According to the documentation, even with a paid plan, there is no hard limit on the duration of a Worker. However, it's essential to note that the client that sent the request must remain connected for the Worker to continue processing.

As stated in the documentation (https://developers.cloudflare.com/workers/platform/limits/):

Duration is a measurement of wall-clock time — the total amount of time from the start to end of an invocation of a Worker.
There is no hard limit on the duration of a Worker.
As long as the client that sent the request remains connected, the Worker can continue processing, making subrequests, and setting timeouts on behalf of that request.

However, it's also mentioned that:

When the client disconnects, all tasks associated with that client request are canceled.
Use event.waitUntil()event.waitUntil() to delay cancellation for another 30 seconds or until the promise passed to waitUntil()waitUntil() completes.

In your case, if you want to keep your CF Worker sleeping for 180 seconds and then send a response, you can use event.waitUntil()event.waitUntil() to delay the cancellation of the task. However, please note that the client must remain connected for the entire duration.

It's also worth mentioning that Cloudflare updates the Workers runtime a few times per week, and when this happens, any in-flight requests are given a grace period of 30 seconds to finish. If a request does not finish within this time, it is terminated.

Please refer to the documentation for more information on Worker duration and event.waitUntil()event.waitUntil(): https://developers.cloudflare.com/workers/platform/limits/

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TK•11/5/25, 9:18 AM

Hey @George Clasher , as above you will have some challenges doing this natively with workers alone, but you could probably use workflows for this https://developers.cloudflare.com/workflows/

Cloudflare Docs

Cloudflare Workflows

With Workflows, you can build applications that chain together multiple steps, automatically retry failed tasks,
and persist state for minutes, hours, or even weeks - with no infrastructure to manage.

George ClasherOP•11/5/25, 9:19 AM

I need Unbound or DO

George ClasherOP•11/5/25, 9:19 AM

That's what ChatGPT says

George ClasherOP•11/5/25, 9:20 AM

Wait sorry, I mis read you, imma read it

George ClasherOP•11/5/25, 4:19 PM

Isn't DO better?

TK•11/5/25, 7:44 PM

you could also use a DO with alarms, yes https://developers.cloudflare.com/durable-objects/api/alarms/

Cloudflare Docs

Alarms

Durable Objects alarms allow you to schedule the Durable Object to be woken up at a time in the future. When the alarm's scheduled time comes, the alarm() handler method will be called. Alarms are modified using the Storage API, and alarm operations follow the same rules as other storage operations.

Can I keep my cf worker sleep 180 seconds and then send response, I have paid plan

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