Cloudflare Developers•7mo ago

Tail Workers are best for persistent connections, where you are writing your logs to some third syst

Tail Workers are best for persistent connections, where you are writing your logs to some third system

HHard@Work Tail Workers are best for persistent connections, where you are writing your log...

Rafflesia•6/17/25, 9:48 PM

sounds like me, I'll look into this then

Successful-Arm-3762•6/21/25, 12:59 AM

Hi everyone,

I'm trying to understand the binding capabilities in Workers for Platforms user workers (not the dispatch worker). Specifically:

Service Bindings: Can user workers have service bindings configured when they're uploaded to a dispatch namespace? The docs mention that service bindings "don't work in the Workers for Platforms model because User Workers are uploaded ad hoc" but it's not entirely clear if this means user workers can't have ANY service bindings or is this forbidding the use of Service Bindings as a replacement for the WfP dispatch mechanism itself?

I found this in the docs: https://developers.cloudflare.com/workers/runtime-apis/bindings/service-bindings/#workers-for-platforms but it's not completely clear on the scope of the limitation.

Service binding documentation says that binded service worker must be deployed before the one that declares the binding. So if I have the service worker deployed would they be accessible from the namespace/user-workers called by the dispatch worker? https://developers.cloudflare.com/workers/runtime-apis/bindings/service-bindings/#deployment

I assume that workers for platforms keep talking about customer user code and since it is "namespace" bound, they might not be available, but this programmable pattern tells me other common resources are available:

https://developers.cloudflare.com/reference-architecture/diagrams/serverless/programmable-platforms/#resource-isolation-model

Workflows: Are Workflow bindings available in user workers? I couldn't find specific documentation about this.
request.cf: If the cf object always unavailable in WfP?

Does anyone have any definitive info on this? Thanks!

Walshy•6/21/25, 9:06 AM

Service Bindings: Can user workers have service bindings configured when they're uploaded to a dispatch namespace? The docs mention that service bindings "don't work in the Workers for Platforms model because User Workers are uploaded ad hoc" but it's not entirely clear if this means user workers can't have ANY service bindings or is this forbidding the use of Service Bindings as a replacement for the WfP dispatch mechanism itself?

They can have service bindings but they must bind to non-wfp-workers

Workflows: Are Workflow bindings available in user workers? I couldn't find specific documentation about this.

Workers and WfP is currently incompatible

request.cf: If the cf object always unavailable in WfP?

It's available

WWalshy > Service Bindings: Can user workers have service bindings configured when they'...

Successful-Arm-3762•6/21/25, 4:47 PM

Thanks Walshy!
Just a small follow up: workflow will still be available on the non-wfp-workers and the dispatch worker?

Walshy•6/21/25, 4:50 PM

Yes you could use it on the dispatcher

rob•6/21/25, 6:01 PM

does thsat new worker upload on the SDK released work for WFP?

WWalshy Yes you could use it on the dispatcher

Successful-Arm-3762•6/21/25, 10:56 PM

thanks mate!

Successful-Arm-3762•6/23/25, 3:50 AM

is it possible to deploy a shared/common worker, and use WfP to create user workers using that script with different bindings? and any updates/new deployments made to that common worker picked up by the user workers?

SSuccessful-Arm-3762 is it possible to deploy a shared/common worker, and use WfP to create user work...

Successful-Arm-3762•6/23/25, 4:13 AM

I think this is not possible. Correct me if I'm wrong.

Does anyone else have better patterns for creating workers with tenant specific bindings?

SSuccessful-Arm-3762 is it possible to deploy a shared/common worker, and use WfP to create user work...

Successful-Arm-3762•6/23/25, 4:25 AM

On another note: I think if this is just made available, it would be a great way to deploy custom binded workers that update on just one wrangler deploy. This solves the dynamic D1 bindings not available problem.

The model would stay the same as depicted here in the docs: https://developers.cloudflare.com/reference-architecture/diagrams/serverless/programmable-platforms/#resource-isolation-model

Cloudflare Docs

Programmable Platforms

A programmable platform allows customers to customize a product by writing code. Unlike traditional SaaS with fixed features, it enables users to extend functionality, deploy backend logic, and build full-stack experiences—all within the platform’s infrastructure.

Original message was deleted

Isaac McFadyen•6/24/25, 8:21 PM

Yes, maximum 1000 per docs here: https://developers.cloudflare.com/kv/platform/limits/

Isaac McFadyen•6/24/25, 8:21 PM

Specifically the "namespaces" limit.

Isaac McFadyen•6/24/25, 8:21 PM

Ah sorry - missed that this was for WfP. Not sure if the limit is the same or not for KV.

JJefferson Hi everyone, according the documentation for cfp it's required to create a bindi...

darkpool•6/27/25, 7:50 PM

are you trying to bind outbound to a dispatch worker or a user worker?

JJefferson Outbound to the dispatch worker like described in docs: https://developers.clou...

darkpool•6/27/25, 7:54 PM

gotcha. are you using multi part form upload?

darkpool•6/27/25, 8:02 PM

hmm not sure sorry. I am just using api to upload user workers but dont see why it wouldn't work since wrangler is using it behind the scenes.

Rafflesia•7/6/25, 6:12 PM

is there a way to have a tail worker for a whole dispatch namespace?

Walshy•7/6/25, 6:45 PM

You can tail the dispatch worker and get logs for all user workers

Rafflesia•7/6/25, 6:45 PM

oh cool

Rafflesia•7/6/25, 6:46 PM

Tailing is not enabled for your account. Please see our docs for more information: https://developers.cloudflare.com/workers/observability/logs/tail-workers/

Tailing is not enabled for your account. Please see our docs for more information: https://developers.cloudflare.com/workers/observability/logs/tail-workers/

I get this when I try and add a tail consumer to a worker in a dispatch namespace though and I dont really see a way to really enable them, should I just add it to the dispatch worker instead in that case?

Rafflesia•7/6/25, 6:46 PM

or is there a specific procedure I'm missing

Walshy•7/6/25, 6:50 PM

You should have tailing, do you have workers paid?

Rafflesia•7/6/25, 6:50 PM

just checked, we pay for workers for platforms but the dispatch worker is still workers free (since we're still just trialing it)

Walshy•7/6/25, 6:51 PM

Ah, that'll be why unfortunately

Walshy•7/6/25, 6:51 PM

We should probably make tailing available too for WfP sub though, will chat with the PM on Monday.

Rafflesia•7/6/25, 6:52 PM

alright

Rafflesia•7/6/25, 7:26 PM

I just bought workers paid and it seems to work fine

WWalshy We should probably make tailing available too for WfP sub though, will chat with...

KernelDeimos•7/7/25, 1:31 AM

yeah extra fee for that is not an issue but just inconvenient, it seems a little silly IMO

Village (Josef)•7/8/25, 9:15 PM

Hey, is there any way to set up Email Routing for Workers for Platforms/Cloudflare for SaaS? I'm essentially hoping to be able to process any emails sent through client domains (obviously if they've configured it to do so) through an Email Worker.

nickyang•7/11/25, 8:53 AM

Hi everyone, I am creating a worker through the API

https://api.cloudflare.com/client/v4/accounts/${CLOUDFLARE_ACCOUNT_ID}/workers/dispatch/namespaces/${DISPATCH_NAMESPACE}/scripts/${WORKER_NAME}/content

https://api.cloudflare.com/client/v4/accounts/${CLOUDFLARE_ACCOUNT_ID}/workers/dispatch/namespaces/${DISPATCH_NAMESPACE}/scripts/${WORKER_NAME}/content

; This API created a worker and encountered a problem {
code: 10013,
message: 'An unknown error has occurred. If this error persists, please file a report in workers-sdk (https://github.com/cloudflare/workers-sdk/issues) or reach out to your account team.'
} What should I do?

GitHub

cloudflare/workers-sdk

Home to Wrangler, the CLI for Cloudflare Workers® - cloudflare/workers-sdk

Rafflesia•7/15/25, 10:43 PM

hey what changed between compatibility date 2025-05-04 and 2025-05-05?
I have code which I cant share currently which is broken on 2025-05-04 but works on 2025-05-05, if I leave compatibility date blank its also broken

Rafflesia•7/15/25, 10:52 PM

I found what changed that day, weakref

JJefferson Hi everyone, according the documentation for cfp it's required to create a bindi...

nclevenger•7/16/25, 9:34 PM

Is there a solution to passing parameters into the outbound worker? I'm seeing this exact error from following the docs exactly, and i've tried a bunch of variations, but i still get a 500 error anytime the outbound.parametersoutbound.parameters property is set

Caião, o Brabo•7/17/25, 9:27 AM

Hey

Caião, o Brabo•7/17/25, 9:27 AM

Someone can help me pls

SuperHelpflare•7/17/25, 3:20 PM

https://dontasktoask.com/

Don't ask to ask, just ask

JJefferson Hi everyone, according the documentation for cfp it's required to create a bindi...

nclevenger•7/17/25, 6:04 PM

@Jefferson did you figure out the problem with the config to support outbound parameters? i've wasted hours with this same issue and i haven't been able to figure it out for some reason ... it does a hard crash that can't be catched even with a try/catch ...

SSaumya M Does anyone here know how to access the `cf` object data inside a namespaced use...

Hard@WorkOP•7/23/25, 7:05 PM

You mean like request.cfrequest.cf? It should be present if you pass it in

Original message was deleted

Hard@WorkOP•7/23/25, 7:05 PM

?pings

SuperHelpflare•7/23/25, 7:05 PM

Please do not ping community members for non-moderation reasons. Doing so will not solve your issue faster and will make people less likely to want to help you.

SSaumya M yes `request.cf` is blank inside the user worker

Hard@WorkOP•7/23/25, 7:06 PM

In the Dispatch Worker?

SSaumya M In Dispatch worker it works cause that is a normal worker and not a namespace wo...

Hard@WorkOP•7/23/25, 7:08 PM

And you are doing something like

let userWorker = env.dispatcher.get(workerName);
return await userWorker.fetch(request);

let userWorker = env.dispatcher.get(workerName);
return await userWorker.fetch(request);

without modifying/creating a new Request?

Tail Workers are best for persistent connections, where you are writing your logs to some third syst

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