You can use service bindings to communicate between 2 worker scripts: https://developers.cloudflare.

You can use service bindings to communicate between 2 worker scripts: https://developers.cloudflare.com/workers/configuration/bindings/about-service-bindings/

Service bindings - Configuration · Cloudflare Workers docs

Service bindings are an API that facilitate Worker-to-Worker communication via explicit bindings defined in your configuration.

AAcе You can use service bindings to communicate between 2 worker scripts: https://de...

divby0•1/20/24, 9:41 AM

Is that what I want though? If I call the worker normally, I could easily end up on a different location right?

divby0•1/20/24, 9:41 AM

Meaning the worker that I call from the queue-consumer will not know about the open SSE connection

Ddivby0 Meaning the worker that I call from the queue-consumer will not know about the o...

AcеOP•1/20/24, 9:43 AM

You would probably need to use durable objects too then, so that your callback from the queue script reaches the same instance with the SSE connection

divby0•1/20/24, 9:44 AM

I'll take a look at durable objects, thanks

divby0•1/20/24, 9:48 AM

Okay seems like DO could solve my problem, but is so much complexity necessary just so I can basically get a notice inside the SSE route whenever the queue consumer finishes? It's even the same worker, I wouldn't even need a service binding. But they can easily be on different locations

divby0•1/20/24, 9:50 AM

Basically I want the EventEmitter to work without caring that there is in fact an infrastructure with different isolates. Does anyone know how I can have similar API without too much back and forth that I'd have with DO?

quisi.do•1/20/24, 6:39 PM

How do you choose between durable objects and r2? The docs don't say much about DO.

Qquisi.do How do you choose between durable objects and r2? The docs don't say much about ...

Cyb3r-Jak3•1/20/24, 6:41 PM

There is https://developers.cloudflare.com/workers/platform/storage-options/

Julian•1/21/24, 2:22 AM

Hello! I am trying to change the Content-Length header, as I will use Cloudflare Workers to download files from a R2 bucket. I tried by changing the header manually, but it doesnt make a change. Then I read that it was not possible to change that header, and that the only way to do so is by using Streams.

Now, my question is how should I do that? I tried to do it (see the code below), however it does not work. Any advice is very much appreciated!

firmwareBin = await env.R2.get(decodeURI(key));
let { readable, writable } = new FixedLengthStream(175104);
firmwareBin.body.pipeTo(writable);
return new Response(readable, firmwareBin);

firmwareBin = await env.R2.get(decodeURI(key));
let { readable, writable } = new FixedLengthStream(175104);
firmwareBin.body.pipeTo(writable);
return new Response(readable, firmwareBin);

CCyb3r-Jak3 There is https://developers.cloudflare.com/workers/platform/storage-options/

quisi.do•1/21/24, 8:41 AM

This is the doc that I specifically didn't find useful. The DO section didn't really tell me when I'd use it over R2. I feel like you need to already know what the company had in mind for DO before you use it. Like maybe it's some kind of popular storage design that I'm not familiar with, so I don't know what it's for.

divby0•1/21/24, 10:43 AM

I am using a worker for server-sent events. Basicall it reads from a database every 3 seconds and sends the results via SSE to the client. Now if I understand correclty, the new standard pricing will neither evict quickly (like the old bundled plan) nor will it be high duration costs (because only cpu time is important) right?

Qquisi.do This is the doc that I specifically didn't find useful. The DO section didn't re...

Cyb3r-Jak3•1/21/24, 2:32 PM

R2 is better for bigger files as it has the largest storage size. DO is good when you need all the data to be synced across the global.

Ddivby0 I am using a worker for server-sent events. Basicall it reads from a database ev...

AcеOP•1/21/24, 3:01 PM

Eviction can happen on any plan but usually doesn’t happen unless there’s a Cloudflare update (about once a day in my experience), free plan users get evicted more frequently than paid/Enterprise. And yes it’s charged in CPU milliseconds instead of wall time.

AAcе Eviction can happen on any plan but usually doesn’t happen unless there’s a Clou...

divby0•1/21/24, 3:15 PM

Thank you

.gwapes•1/21/24, 8:17 PM

For a worker route, if you don’t setup any rate limiting

.gwapes•1/21/24, 8:17 PM

What’s like the, default rate limit set to

kian•1/21/24, 8:18 PM

Free is 1000 reqs per min

kian•1/21/24, 8:18 PM

Paid doesn't have one (that limits the whole Worker)

CCyb3r-Jak3 R2 is better for bigger files as it has the largest storage size. DO is good whe...

quisi.do•1/21/24, 8:44 PM

Those don't seem related though.

What if I need small files (~2kB) that serve more as debug logs and will rarely-to-never be accessed?

Qquisi.do Those don't seem related though. 😂 What if I need small files (~2kB) that serv...

Hello, I’m Allie!•1/21/24, 8:46 PM

I would still go for R2. DOs are more for when you need compute attached to storage

kian•1/21/24, 8:47 PM

Durable Objects are stateful Workers that have transactional storage attached

kian•1/21/24, 8:47 PM

R2 is just object storage, strongly consistent with an S3 API

kian•1/21/24, 8:47 PM

By far the simplest to use, since the S3 API means you can interact with it outside of Workers/the CF REST API

quisi.do•1/21/24, 9:05 PM

I'm only using Workers to write the data, but I don't intend to read much from it.

quisi.do•1/21/24, 9:05 PM

But "compatible with S3" doesn't really mean much if I'm not using S3.

kian•1/21/24, 9:06 PM

Means you can back it up easily, interact with it outside of Workers (i.e your own device), migrate to other storage options easily, etc

kian•1/21/24, 9:07 PM

It's not about you using S3, it's about how many things integrate or work with the S3 API

Kkian Durable Objects are stateful Workers that have transactional storage attached

quisi.do•1/21/24, 9:09 PM

Don't both R2 and DO advertise as strongly consistent? If that's not a tie-breaker between them, what is?

kian•1/21/24, 9:10 PM

https://developers.cloudflare.com/r2/reference/limits/ vs https://developers.cloudflare.com/durable-objects/platform/limits/

Kkian It's not about you using S3, it's about how many things integrate or work with t...

quisi.do•1/21/24, 9:10 PM

I'm not currently using, nor going to use, anything that integrates with the S3 API, so this doesn't help me choose between them.

quisi.do•1/21/24, 9:12 PM

The limit page is a bit better than the differences page.

Looks like R2 is for just dumping data into it [free tier + unlimited storage]. DO says it's a paid-only feature that limits you to 50GB for your entire account.