I have a platform which is something like Zapier. My user want to schedule their own CRONs. Like run

I have a platform which is something like Zapier. My user want to schedule their own CRONs. Like run this action every 5 minutes. Is this something I can do with workflows?

Ccosbgn I have a platform which is something like Zapier. My user want to schedule their...

Matt Silverlock•4/8/25, 12:41 PM

Can you describe a little more about what you're trying to do? Workflows are great for multi-step / async tasks, but aren't themselves a "task scheduler" - you can use Durable Object Alarms, the Agents SDK (and the scheduling API), or even Cron Triggers to schedule tasks - incl. Workflows.

MMatt Silverlock Have you seen: ```sh npm create cloudflare@latest -- --template cloudflare/agent...

gruntlord6•4/8/25, 1:11 PM

no I did not, I was under the impression templates were in the dashboard

MMatt Silverlock Can you describe a little more about what you're trying to do? Workflows are gre...

cosbgnOP•4/8/25, 1:14 PM

Pretty much say my user has a workflow like:

Search for new concerts in Rome and email me if tickets are less than 50$Search for new concerts in Rome and email me if tickets are less than 50$
- run it every 6 hoursevery 6 hours

My current system works like this: I have a single CRON which runs every minute, queries the DB for pending jobs and runs them. This works but is not really scalable. I'm thinking how I could setup a system where the user defined cron interval would be the trigger. i.e. when the user saves the workflow I create a new cron/alter/workflow/whatever which takes care of this one.

Ccosbgn Pretty much say my user has a workflow like: - `Search for new concerts in Rome...

Matt Silverlock•4/8/25, 1:37 PM

I'd consider using an Agent - e.g. an Agent for each user + the Agent schedules a ticket-search Workflow that runs the search + validates prices + reports back

Ccosbgn Pretty much say my user has a workflow like: - `Search for new concerts in Rome...

Matt Silverlock•4/8/25, 1:39 PM

This isn't the same, but it's similar: each repo is associated with an Agent -> the Agent kicks a Workflow for each PR.

In your case, it's an Agent per user, and the Workflow is for a ticket-search (instead of a PR/code review):

cosbgnOP•4/8/25, 1:40 PM

Yeah I'm looking at the agents api

cosbgnOP•4/8/25, 1:40 PM

thanks

Craig•4/8/25, 2:48 PM

Hey guys, Should I move all of my complex tasks in workers into workflows? so far it seems like it doesn’t have that much disadvantages aside from being a little bit complicated.

CCraig Hey guys, Should I move all of my complex tasks in workers into workflows? so fa...

gruntlord6•4/8/25, 3:08 PM

workflows seem a lot more streamlined an maintainable then doing the tasks independently, especially if they involve multiple workers or services.

theres also some things unique like the r2 trigger that could be really usefull on its own

gruntlord6•4/8/25, 3:09 PM

I'm going to try and move one of my pipeline systems over and see how it goes, it looks promising

Ggruntlord6 workflows seem a lot more streamlined an maintainable then doing the tasks indep...

Craig•4/8/25, 3:11 PM

Yeah, that’s really attempting

gruntlord6•4/8/25, 3:11 PM

thats why I am glad theres a template as a starting point , give me something to start with and migrate over the pieces

MMatt Silverlock @Diogo Ferreira @Seekerdasbatatas since I’m travelling / in transit

Suman!•4/8/25, 4:03 PM

Hi, I've added a reproduction repo in this issue - https://github.com/cloudflare/workers-sdk/issues/8850

GitHub

workflow.sendEvent is not a function error in production – works ...

Which Cloudflare product(s) does this pertain to? Other What versions & operating system are you using? wrangler v4.9.0 Please provide a link to a minimal reproduction https://github.com/Suman0...

hugo martins•4/8/25, 8:08 PM

Hello, is there any way to start multiple different workflows in batch ( using only one request ) I know we can start multiple invocation of the same workflow using the createBatch but IDK about different ones

gruntlord6•4/8/25, 8:24 PM

as in a workflow invoking another workflow?

hugo martins•4/8/25, 8:58 PM

a worker invoking multiple workflows at the same time

gruntlord6•4/8/25, 11:28 PM

I haven't dug into it yet but you could just have it invoke the triggers for each right?

Hhugo martins Hello, is there any way to start multiple different workflows in batch ( using o...

Matt Silverlock•4/9/25, 6:01 AM

Call .create.create as needed for each Workflow.

SSuman!Hi, I've added a reproduction repo in this issue - https://github.com/cloudflare...

Diogo Ferreira•4/9/25, 10:43 AM

HI! Sorry for the inconvenience. Our edge runtime update that brings support for instance.sendEventinstance.sendEvent is unfortunately arriving late. It is currently in our staged release process, and should be out very soon. It will make an announcement here once it fully propagated.

ddsgadget•4/9/25, 10:52 AM

Is workflows now out of beta? OK to use in production?

James•4/9/25, 12:04 PM

Yes! https://blog.cloudflare.com/workflows-ga-production-ready-durable-execution/

The Cloudflare Blog

Cloudflare Workflows is now GA: production-ready durable execution

Workflows — a durable execution engine built directly on top of Workers — is now Generally Available. We’ve landed new human-in-the-loop capabilities, more scale, and more metrics: just what you need for a production-ready service.

martinklepsch•4/9/25, 3:11 PM

I'm running into a somewhat frustrating auth error when trying to trigger or list workflows via the

cloudflare

cloudflare

npm package …

martinklepsch•4/9/25, 3:57 PM

Somewhat related to the above, is logging from workflows captured in the worker logs?

I have this in

wrangler.jsonc

wrangler.jsonc

  "observability": {
    "enabled": true,
    "head_sampling_rate": 1
  }

  "observability": {
    "enabled": true,
    "head_sampling_rate": 1
  }

Jadugar_Jaggu•4/9/25, 4:49 PM

Hey, I think there might be a bug with Cloudflare Workers.
Whenever I update any binding (like a KV namespace) from the dashboard and deploy the changes, the binding for the Workflow gets removed automatically. This seems unintended and could cause issues during deployment.

Jadugar_Jaggu•4/9/25, 4:51 PM

this is happening after the GA of workflow

JJadugar_Jaggu Hey, I think there might be a bug with Cloudflare Workers. Whenever I update any...

Matt Silverlock•4/9/25, 5:20 PM

If you are mixing the dashboard + wrangler you can run into conditions like this - strongly recommend using one model to deploy. cc @Sid Chatterjee if we can make sure Workflows bindings stick here.

MMatt Silverlock If you are mixing the dashboard + wrangler you can run into conditions like this...

Jadugar_Jaggu•4/9/25, 5:22 PM

but what if I am out of my work station and I need to urgently update some Vars, secrets etc. first thought will be to use dashboard from mobile.

JulianD•4/9/25, 11:42 PM

hey guys how do I reduce my storage metric in workflows? I see that I have over 5GB of storage used (!!) and I do not need this but I don't see any option to delete old instances or even configure the workflow API to set a smaller retention period. Any ideas?

ccarse•4/10/25, 3:12 AM

So I'm building a tool that runs a workflow when a file gets placed in an r2 bucket. All working well. I'm trying to build a dashboard to show the upload events, trigger retries, etc.. The problem I'm running into is that env.WORKFLOW.get(<instanceId>) doesn't work for me in dev. Is this intended?

JJulianD hey guys how do I reduce my storage metric in workflows? I see that I have over ...

Matt Silverlock•4/10/25, 5:25 AM

This will be landing soon, but we don’t yet charge for storage.

Cccarse So I'm building a tool that runs a workflow when a file gets placed in an r2 buc...

Matt Silverlock•4/10/25, 5:26 AM

Can you show the code, and what does “doesn’t work” mean - what is the error message? What version of wrangler?

MMatt Silverlock Can you show the code, and what does “doesn’t work” mean - what is the error mes...

ccarse•4/10/25, 5:27 AM

I just updated wrangler to latest. The code snippet I posted just returns null when running locally.

Cccarse I just updated wrangler to latest. The code snippet I posted just returns null w...

Matt Silverlock•4/10/25, 5:28 AM

What code snippet?

Matt Silverlock•4/10/25, 5:29 AM

Post the actual code - a minimal reproduction.

MMatt Silverlock Post the actual code - a minimal reproduction.

ccarse•4/10/25, 5:29 AM

thanks for the reply. Will tomorrow. Just got in bed.

Original message was deleted

Suman!•4/10/25, 11:14 AM

Just got it working!! Awesome!! Thanks

MMatt Silverlock Post the actual code - a minimal reproduction.

ccarse•4/10/25, 2:42 PM

So after further investigation, it turns out any time the dev server reloads (any code change), every workflow instance disappears. This is really annoying. Is this expected?

You can repro with the workflows starter template easily.

npm create cloudflare@latest workflows-starter -- --template "cloudflare/workflows-starter"

npm create cloudflare@latest workflows-starter -- --template "cloudflare/workflows-starter"

Just run it, go to localhost:8787, record the instanceId and note that localhost:8787?instanceId=<id> shows details of the instance, add a console.log call anywhere and save, now localhost:8787?instanceId=<id> gives

instance.not_found

instance.not_found

error.

Aster•4/10/25, 3:48 PM

Hello, do you have a cron mode for workflows? Let's say; start workflow A every 1st monday of the month?

fredviken•4/10/25, 3:50 PM

Hi! Has anyone been able to get cross-script to work locally? I've seen other people encounter this issue but not seen any solutions

✘ [ERROR] Worker "workflows:s3-update-status"'s binding "USER_WORKFLOW" refers to a service "core:user:integrations", but no such service is defined.

✘ [ERROR] Worker "workflows:s3-update-status"'s binding "USER_WORKFLOW" refers to a service "core:user:integrations", but no such service is defined.

It works when called from the same worker, and service bindings between the workers seem to work fine, it's only an issue with the cross-script bindings.

Victor•4/10/25, 4:16 PM

When workflows are queued, is it normal behavior to not show the

params

params

Cccarse So after further investigation, it turns out any time the dev server reloads (an...

Matt Silverlock•4/10/25, 4:39 PM

That's normal: dev sessions don't persist by default (otherwise we'd be told we're filling up everyone's disk + clobbering test runs/local dev). What are you trying to solve across

wrangler dev

wrangler dev

invocations?

Ffredviken Hi! Has anyone been able to get cross-script to work locally? I've seen other pe...

Matt Silverlock•4/10/25, 4:39 PM

Show your

wrangler

wrangler

config and code.

MMatt Silverlock That's normal: dev sessions don't persist by default (otherwise we'd be told we'...

ccarse•4/10/25, 4:55 PM

I mean, I think there's a big gap between never letting things expire and expiring everything for a single character code change anywhere in the project right?

And let me be clear, this is a single

wrangler dev

wrangler dev

invocation.

Like one option is that you could have a TTL on workflow instances that defaulted to like a day or something?

Cccarse I mean, I think there's a big gap between never letting things expire and expiri...

Matt Silverlock•4/10/25, 4:57 PM

I can't reproduce that in the same invocation (nor should I be able to): instances persist during the running

wrangler dev

wrangler dev

run:

Matt Silverlock•4/10/25, 4:57 PM

If you change the code, that's a new invocation (reload of all state)

ccarse•4/10/25, 4:58 PM

Oh I wouldn't call that a new invocation, I only invoked it once.

Matt Silverlock•4/10/25, 4:58 PM

I understand where you're coming from, but I'm also explaining why this is the case

ccarse•4/10/25, 4:58 PM

Like, for example, my kv data doesn't disappear on each invocation right?

Matt Silverlock•4/10/25, 4:58 PM

Will chat w/ the team about options to opt-in to persistency here

ccarse•4/10/25, 4:58 PM

Why do instances?

I have a platform which is something like Zapier. My user want to schedule their own CRONs. Like run

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