I just round

worker routes

so do I add the worker to my site with a route?

ah this looks promising, cool

You can use Routes to put your worker in front of an existing origin, yea, i.e if you wanted every path on your apex to go to your worker, use

mydomain.com/*

in your route

But yea, you can use workers to pass through the request to your origin, and change the response based on your origin's response

javascript
export default {
  async fetch(request, env) {
    var originResponse = await fetch(request);
    if (originResponse.status == 530) {
      return fetch("https://backupserver.mydomain.com/{usetheexistingpath, i'm too lazy to do this right for this example, but you could make a URL object off the request.url and change the hostname}")
    }
    return originResponse;
  }
}

Or you can completely avoid requesting your origin by returning a response in your worker, etc. Just keep in mind Workers execute before cache, so they will always execute for every request

thanks, thats a big help.

Hello. I need to make load balancing. How to do it? Please help me step by step

If I call

waitUntil

multiple times, will all of the promises be resolved before the Worker is killed, or only the last promise will be resolved for sure?

all of them, to my knowledge. You can also

Promise.allSettled

or similar

yeah you can call it as many times as you want

thanks!

Can I send an email using cloudflare email workers or normal worker without using thirdparty email delivery api like sendgrid or mailchannels ?

No cloudflare only does incoming

Will it be possible to send in the future ?

This is important to me because I currently rely fully on Cloudflare, the only thing left is to manage emails, I would like to have everything in one place.

is everything supposed to be a devDep for workers and pages? or does it not really make a difference

probably not

just my personal opinion though 🤷

MailChannels works without an account. You just need to be a CF worker and you can send mail out.

I’m currently finishing up my email stack and it was way more work than I expected.

What is the worker type for R2 Buckets? I'm really having a hard time figuring out literally any of the types in Workers.

I'm sure it exists somewhere, but it's quite frustrating as Typescript support feels entirely undefined here. All of it is Javascript pretty much.

K, finally found it. IDE didn't provide autocomplete for

R2Bucket

.

Can any give brief explanation of this https://developers.cloudflare.com/workers/platform/limits/#cache-api-limits Its vary confusing that non if this is clearly documented 512mb/50/5gib in total for how long and in which conditions

There is no guarantees or limits on time

Think of it as LRU - if your assets aren’t being requested frequently then they’ll be evicted to make room

I'm getting

Response closed due to connection limit

? Seems like when I launch R2 PUT requests, doesn't seem to mind a bunch of parallel fetch calls

How many are you running per Request?

10 fetch then PUT, parallel

Workers have a max of 6 outbound connections, though it should just freeze the overflow...