I believe that DOs persist in one colo, until they are shut down. Once they are triggered again, the

I believe that DOs persist in one colo, until they are shut down. Once they are triggered again, they are reinitialized in the nearest DO-ready colo to the incoming request.

HHello, I’m Allie!I believe that DOs persist in one colo, until they are shut down. Once they are ...

codefrau•8/6/21, 1:56 AM

The way @kentonv_cf described it is that it lives in one colo, but is replicated to a few near colos for backup. It would not "jump" from the EU to the US.

Ccodefrau The way @kentonv_cf described it is that it lives in one colo, but is replicated...

Hello, I’m Allie!OP•8/6/21, 1:58 AM

According to your log above, it seems that because there was an extended period of time with no requests, it was terminated(FRA). Once someone else triggered it(Me, probably), it was reestablished in the nearest Colo(SJC) to my request.

Hello, I’m Allie!OP•8/6/21, 2:00 AM

At least I believe so, I'm having a hard time figuring out that log.

codefrau•8/6/21, 2:00 AM

LAX being down for a while would make sense, but I'd have assumed it would move back to LAX once its up again.

Hello, I’m Allie!OP•8/6/21, 2:01 AM

Not if the next request comes from somewhere else, before it can reestablish itself there.

codefrau•8/6/21, 2:01 AM

there were like 13 hours in between

Ccodefrau there were like 13 hours in between

Hello, I’m Allie!OP•8/6/21, 2:02 AM

The change?

HHello, I’m Allie!The change?

codefrau•8/6/21, 2:02 AM

to "jump back" from SJC to LAX

codefrau•8/6/21, 2:02 AM

... but maybe SJC is now the "authoritative copy"

Ccodefrau to "jump back" from SJC to LAX

Hello, I’m Allie!OP•8/6/21, 2:03 AM

How many times was it triggered in those 13 hours?

codefrau•8/6/21, 2:03 AM

Never. This is the complete log.

codefrau•8/6/21, 2:04 AM

I left out some detail but the last connection in SJC closed at 2021-08-05 03:22:52.283 PDT

Hello, I’m Allie!OP•8/6/21, 2:04 AM

So, somewhere within those 13 hours, the SJC Instance was terminated. Then, after 13 hours had passed, someone sent a request, initializing a new instance at LAX

Ccodefrau I left out some detail but the last connection in SJC closed at 2021-08-05 03:22...

Hello, I’m Allie!OP•8/6/21, 2:05 AM

Not me then.

codefrau•8/6/21, 2:05 AM

no it's in SJC now

Ccodefrau no it's in SJC now

Hello, I’m Allie!OP•8/6/21, 2:05 AM

Sorry, meant the other way around.

ItsWendell•8/6/21, 7:17 AM

Do console logs show up in

wranger tail

wranger tail

for durable workers? Doesn't look like it

Ccodefrau to "jump back" from SJC to LAX

Erwin•8/6/21, 7:25 AM

DOs that do not have any external state (used the storage API) can be garbage collected and restarted at some other point.

But if I am not mistaken we did have an issue in LAX recently, so it may have been a fail-over indeed. And SJC being the copy with the data now.
And you are correct in that a DO will not leave the cluster it is currently part of, so it won't move from the US to the EU etc.

IItsWendell Do console logs show up in `wranger tail` for durable workers? Doesn't look like...

Erwin•8/6/21, 7:35 AM

No, they do not unfortunately..

ItsWendell•8/6/21, 7:46 AM

Is websocket to websocket communication possible from Durable Workers to Workers?

EErwin DOs that do not have any external state (used the storage API) can be garbage co...

Hello, I’m Allie!OP•8/6/21, 8:16 AM

Will DO's be able to migrate themselves at some point?

HHello, I’m Allie!Will DO's be able to migrate themselves at some point?

Erwin•8/6/21, 8:17 AM

That is certainly part of the vision for DOs, but that won't be part of the first release I would imagine..

EErwin That is certainly part of the vision for DOs, but that won't be part of the firs...

Hello, I’m Allie!OP•8/6/21, 8:17 AM

Probably a bit of finagling to get it GDPR-Compliant...

IItsWendell Is websocket to websocket communication possible from Durable Workers to Workers...

ItsWendell•8/6/21, 8:30 AM

I've tried this in multiple ways now but can't get it to work. In short, I have a worker which manages incoming websocket connections for GraphQL subscriptions. Once a subscription comes in for a specific chatroom, a connection needs to be opened (or forwarded) to that durable object of that specific chatroom.

The fetch method of stubs don't seem to return a webSocket, created and passed down as response on the durable object.
I can't seem to pass a websocket to the durable object

Any tips? Is this at all possible?

HHello, I’m Allie!Probably a bit of finagling to get it GDPR-Compliant...

Erwin•8/6/21, 8:32 AM

It is already possible to restrict DOs only to EU colos.. https://developers.cloudflare.com/workers/runtime-apis/durable-objects#restricting-objects-to-a-jurisdiction

It isn't possible to automatically migrate a DO after it is created, especially if it has stored data already.

Erwin•8/6/21, 8:33 AM

I don't have a lot of experience with the websocket side of things @itswendell, but I feel it should absolutely be possible?

EErwin It is already possible to restrict DOs only to EU colos.. https://developers.clo...

Hello, I’m Allie!OP•8/6/21, 8:33 AM

On the finagling, I meant getting the auto-migration to be GDPR-Compliant.

HHello, I’m Allie!On the finagling, I meant getting the auto-migration to be GDPR-Compliant.

Erwin•8/6/21, 8:34 AM

Oh no.. that is the easy part for a change

.. the technical challenges are way harder tbh..

EErwin Oh no.. that is the easy part for a change 😄 .. the technical challenges are wa...

Hello, I’m Allie!OP•8/6/21, 8:34 AM

My brain hurts just thinking about it.

HHello, I’m Allie!My brain hurts just thinking about it.

Erwin•8/6/21, 8:35 AM

So does mine, so I am glad we have an amazing team working on that tbh..

EErwin It is already possible to restrict DOs only to EU colos.. https://developers.clo...

Hello, I’m Allie!OP•8/6/21, 8:36 AM

So when you say it can't auto-migrate, does that mean that if a DO is initialize spawned in the US, but later terminated(Not Wiped), it can never be recreated in Europe?

EErwin I don't have a lot of experience with the websocket side of things @itswendell, ...

ItsWendell•8/6/21, 9:20 AM

I'm not so sure about that, I think the tricky thing is is that the connection comes starts in the Worker. The Worker creates and start's listening to WebSocket events with the client. Once a websocket event comes in that subscribes to a specific chatroom channel, I need to somehow communicate from the Worker to the Durable Object in real-time.

I can't start a client / server from the Worker since there is no way I can pass the client in a Fetch request to the Durable Object.
I can't start a client / server from the Durable Object, since the response of the durable object with fetch, doesn't include the webSocket.

Erwin•8/6/21, 9:21 AM

That is correct. (Assuming it saved something to storage). If it didn’t save something to storage I believe it could.

IItsWendell I'm not so sure about that, I think the tricky thing is is that the connection c...

ItsWendell•8/6/21, 11:03 AM

Actually, I think I just made it work

JJohn Spurlock one way is to fetch `https://1.1.1.1/cdn-cgi/trace` from inside the DO, and cach...

ItsWendell•8/6/21, 11:52 AM

Is there are a package / endpoint to make the

colo

colo

field more human readable?

IItsWendell Is there are a package / endpoint to make the `colo` field more human readable?

John Spurlock•8/6/21, 12:08 PM

I believe they are standard IATA airport codes (https://en.wikipedia.org/wiki/IATA_airport_code) but that list posted yesterday (https://speed.cloudflare.com/locations) would be a nice cf-specific endpoint to use, for as long as it's around

IATA airport code

An IATA airport code, also known as an IATA location identifier, IATA station code, or simply a location identifier, is a three-letter geocode designating many airports and metropolitan areas around the world, defined by the International Air Transport Association (IATA). The characters prominently displayed on baggage tags attached at airport ...

JJohn Spurlock I believe they are standard IATA airport codes (https://en.wikipedia.org/wiki/IA...

ItsWendell•8/6/21, 12:24 PM

Thanks that helps, I think I'll try a simple free API reverse geocoding API for now, see how that works.

Wallacy•8/6/21, 12:51 PM

Any plan to activate any DO here on SouthAmerica? It’s bad to always be routes to US … that ads to much latency that makes hard to test our software for any regression.

Erwin•8/6/21, 2:56 PM

You get a specific bank of CPU time after every message. So I think if you don't send any messages, it will run out and terminate the DO at some point?

WWallacy Any plan to activate any DO here on SouthAmerica? It’s bad to always be routes t...

Erwin•8/6/21, 2:58 PM

I am sure we would love to activate DOs in more regions world-wide, but the requirements are to have multiple high quality dcs close together with multiple reliable network connections. And those are hard to find in areas like South America. I know exactly how you feel in Australia

ItsWendell•8/6/21, 3:07 PM

Is there a list of locations for DOs? Whenever I create one in amsterdam it seems to be spawning in France. (according to reverse geocoding the IP of the DO).