there is a very low memory limit (128mb), cpu time limit, http requests limit, even the quentity of

there is a very low memory limit (128mb), cpu time limit, http requests limit, even the quentity of active timers (setTimeouts)

Gabriel FranciscoOP•6/28/25, 1:17 PM

very bad dx

Gabriel FranciscoOP•6/28/25, 1:18 PM

and the cpu time limit I think its a bug on the node_compat of "node:net", no way I'm getting this limit from my code, it's probably internal

GGabriel Francisco there is a very low memory limit (128mb), cpu time limit, http requests limit, e...

koraytaylan•6/28/25, 1:20 PM

but receiving tons of data into memory is never a good idea anyway. for a similar case i stream the incoming data into an r2 object and then process it afterwards in a similar streaming fashion

GGabriel Francisco and the cpu time limit I think its a bug on the node_compat of "node:net", no wa...

koraytaylan•6/28/25, 1:21 PM

there is this new containers offering which is similarly in beta currently. from what you describe it seems like a better fit to me than workflows.

Kkoraytaylan but receiving tons of data into memory is never a good idea anyway. for a simila...

Gabriel FranciscoOP•6/28/25, 1:26 PM

even if I stream the data to a r2 bucket I feel I will get the cpu limit

Gabriel FranciscoOP•6/28/25, 1:26 PM

how do you process the data afterwards? using workflows?

Kkoraytaylan there is this new containers offering which is similarly in beta currently. from...

Gabriel FranciscoOP•6/28/25, 1:27 PM

yep, I'm watching the containers 101 right now, that is my hypothesis too

Gabriel FranciscoOP•6/28/25, 1:28 PM

but I feel very bad for workflows, I thought it was a better fit for use cases like mine, but with limits similar to workers http it makes it unusable for data management

meow•6/29/25, 4:29 PM

Hey guys, I’m trying to return workflow instance ids after createBatch. But the instance.id always return null. It works fine locally but not on production. Anyone experience this?

ac•6/29/25, 9:56 PM

Every time we end a workflow "early", e.g. just return a value before all the steps are done, this is logged as an Error in CF observability/logs section (even though it is definitely not an error). Is this a known issue? Will it be addressed?

Wilco•6/30/25, 7:40 AM

Hi all, I'm trying to catch an error from a step (when the retry limit is reached) and it seems the

cause

cause

of the error is not set. Is that expected? Makes it hard to communicate data from the failed step to the recovery flow

Olriko•6/30/25, 9:50 AM

Hello guys

I'm facing a problem where my workflow instances get queued but never starts. After a mistake that end up calling instances recursively.

OOlriko Hello guys I'm facing a problem where my workflow instances get queued but neve...

avenceslau•6/30/25, 9:51 AM

Please link your account so that we can have look

Aavenceslau Please link your account so that we can have look

Olriko•6/30/25, 9:54 AM

https://dash.cloudflare.com/e97e3fed722428f4d726062eae9aa766/workers/workflows

SODaLC•6/30/25, 12:36 PM

Is there a way to make Workflows process one at a time, instead of multiple running at once?

MithushanJ•6/30/25, 2:10 PM

What is the time limit for a step to finish in a workflow that has multiple steps

alex (he/him)•6/30/25, 6:07 PM

Any way we can get

step.waitForEvent

step.waitForEvent

not count towards the total step count per workflow, similar to

step.sleep

step.sleep

alex (he/him)•6/30/25, 6:08 PM

We have a hard time to strucutre our workflows to stay under the 1024 step limit. We either hit the cpu time limit of 5 minutes if we do multiple tasks in one step, or we hit the step limit if we do each task in a separate nested workflow

Gabriel FranciscoOP•6/30/25, 6:52 PM

how can I see the logs of a specific instance? I can't find it on observability

alex (he/him)•6/30/25, 9:33 PM

Are memory limit of 128MB shared between multiple workflow instances?

alex (he/him)•7/1/25, 6:24 AM

What is the backoff rate from

exponential

exponential

is it 2?

Aac Every time we end a workflow "early", e.g. just return a value before all the st...

ddsgadget•7/1/25, 11:12 PM

This has been an issue forever. I have posted about it many times and others have experienced the same thing. I have never seen Cloudflare acknowledge it, though. Supposedly, if you JSON stringify the response, you won't see an error, but even Cloudflare doesn't do that in any of the examples. Bottom line, this is a bug in workflow, but it doesnb't seem like they will ever fix it.

Dddsgadget This has been an issue forever. I have posted about it many times and others hav...

Seekerdasbatatas•7/2/25, 9:01 AM

While the invocation might show the invocation as errored/canceled, it's not directly related if your workflow instance threw or not, it's a side-effect of how we guarantee durable execution internally. You should refer to the instance logs (in the Workflows tab, in dash),to see if an instance failed or not.

But this is something that we should definitely fix in our logging pipeline, so sorry about that :MeowHeartCloudflare: , we'll try to get it fixed :soontm:

SSeekerdasbatatas While the invocation might show the invocation as errored/canceled, it's not dir...

ac•7/2/25, 12:18 PM

Thank you! That'd be hugely helpful for us, especially since it makes it show on our dashboard that we have hundreds of thousands of "Errors" (most of which are actually just workflows). Makes it very hard to understand our system health.

Olriko•7/3/25, 11:36 AM

Hello, I have a 429 error when I want to trigger a workflow from the ui (and I don't spam your api)

POST https://dash.cloudflare.com/api/v4/accounts/e97e3fed722428f4d726062eae9aa766/workflows/workflow-orchestrator-staging/instances

POST https://dash.cloudflare.com/api/v4/accounts/e97e3fed722428f4d726062eae9aa766/workflows/workflow-orchestrator-staging/instances

Mm0c What confused me, I think they only start showing up on observability when they ...

unsync•7/3/25, 4:19 PM

We started on workflows and this puzzles me, if I have a long running workflow, I get close to zero observability of what happen inside my steps until the whole execution is done ?

martinhoest•7/3/25, 7:43 PM

I must be fooling about with Workflows and Observability - or is it normal that a failing step of a Workflow will not add meaningful logs to Observability?

The error here is thrown within

step.do

step.do

but it is nowhere to be found from the logs tab of the worker. I also cannot find anything on the Instance ID of the workflow invocation.

SSeekerdasbatatas While the invocation might show the invocation as errored/canceled, it's not dir...

ddsgadget•7/4/25, 2:17 AM

Thank you! yeah, I understand the error has no impact on the actual workflow. But, it is really annoying to see the errors in the dashboard when there is no real workflow error.

Gabriel FranciscoOP•7/4/25, 3:46 PM

is it possible to see the logs of a particular step? this seems basic but I can't find a specific filter for that

Gabriel FranciscoOP•7/4/25, 4:37 PM

my workflows are going to some weird "Waiting" state, even without sleeps, I would like to see what is happening but can't find any logs

martinhoest•7/5/25, 6:45 AM

What's the expected output in logs if one Workflow triggers another Workflow, but the instance ID of the latter already exists?

Will I need to loop through all created instances from

await this.env.WF_FILING_INGEST.createBatch(batchParams);

await this.env.WF_FILING_INGEST.createBatch(batchParams);

and call their

status()

status()

function?

Or it might be better to check for existing instance before creating new?

Bryan Chen•7/7/25, 9:52 PM

what exactly does this mean? the workflow status is completed, but the step is running and have no output?

BBryan Chen what exactly does this mean? the workflow status is completed, but the step is r...

johtso•7/9/25, 10:03 AM

Did you figure out what was going on?

Bryan Chen•7/9/25, 8:50 PM

no. I suspect the network request got hang but wasn't able to confirm it. and that still indicate some bug in the workflow

Advany•7/9/25, 9:51 PM

Is there already a way to use workflows using vitest?

https://github.com/cloudflare/workers-sdk/issues/7414

GitHub

🐛 BUG: Vitest does not work with workflows · Issue #7414 · clo...

Which Cloudflare product(s) does this pertain to? Miniflare, Other What version(s) of the tool(s) are you using? 0.5.32 [@cloudflare/vitest-pool-workers], 3.91.0 [wrangler] What version of Node are...

BBryan Chen what exactly does this mean? the workflow status is completed, but the step is r...

Jadugar_Jaggu•7/10/25, 3:58 AM

Maybe you haven't used await in your step. it's waiting for pending promise.

try awaiting every step "await step.do()"

JJadugar_Jaggu Maybe you haven't used await in your step. it's waiting for pending promise. tr...

Bryan Chen•7/10/25, 4:09 AM

I global searched it, every step are awaited. besides, if missing await can trigger this, it is a workflow bug

Bryan Chen•7/10/25, 4:13 AM

related question, the step timeout is 10mins, is it wall time or compute time?

AshuRajput02•7/10/25, 9:22 AM

hey everyone
so there is a site of mine say abc.com now i m thinking to apply zero trust policies in it . so basically i want ki user should be able to access the auth page only via warp client and not by directly hitting the url on website.
how to achieve this ?/

Jeffrey Konowitch•7/10/25, 11:22 PM

Clarifying
Maximum Workflow instance creation rate
Maximum Workflow instance creation rate
Limit

The createBatch documentation says

call to createBatch is treated the same as a call to create (for a single instance) and allows you to work within the instance creation limit.

Does this imply that when using

createBatch

createBatch

, if you were to create 100 instances per batch (the maximum), that you could create 10,000 instances (100 per batch * 100 calls) per 10 seconds?

I understand there are other limits that might kick in (e.g. Maximum number of queued instances), but this example is meant to clarify the creation rate limit.

Worklows Limits Reference

Frank•7/11/25, 4:03 PM

trying to move one of our cache gen into workflow

list active users
fetch data
store into r2

my initial thought is having a workflow just to fetch users, then it kicks off another workflow to fetch and cache data based on user id
or better to just have a single workflow?

flof.fly•7/12/25, 9:54 AM

Can I invoke a Container from a Workflow?

flof.fly•7/12/25, 11:49 AM

Yes I can

Joentze•7/19/25, 3:54 AM

Seeking advice here, i want to create scheduled workflows. I want to create periodic tasks (i.e. daily at 9am, 1st day monthly), and one-time tasks (date xx at yy time). These workflows are dynamically added by the user via an api request to the worker. I’m using Hono to handle routing.

What should i use to achieve this?

JJoentze Seeking advice here, i want to create scheduled workflows. I want to create peri...

boop•7/19/25, 11:13 AM

Durable Object alarms are better suited for this

Yash Gupta•7/21/25, 9:29 AM

Has anyone tried to access steps/execution history for workflows from within their application?

It seems that the workers binding for workflows only gives present status and output, and while the API itself has steps history, it doesn't work for local development, making it hard to incorporate that as part of the solution.

Another option I've explored is manually intrumenting the step, waitForEvent and sleep methods, but it seems like redundant work (and possibly flaky)

alex (he/him)•7/22/25, 11:44 AM

I'm really having some issues with workflow creations

alex (he/him)•7/22/25, 11:44 AM

Already using

createBatch

createBatch

and try to create ~650 instances all at the same time

there is a very low memory limit (128mb), cpu time limit, http requests limit, even the quentity of

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