Yea, it makes more sense now, but in a way that's slightly sad because the replicas are just statica

Yea, it makes more sense now, but in a way that's slightly sad because the replicas are just statically placed in all regions rather than dynamically in more places based on load

ZackOP•4/10/25, 2:30 PM

However, very happy it's here, and sounds like dynamic placement is something they want to bring in the future

ZZack Yea, it makes more sense now, but in a way that's slightly sad because the repli...

Isaac McFadyen•4/10/25, 2:32 PM

Yeessss except:

currently one in each supported D1 region

So right now they're static but they're static in everywhere D1 can even be

Isaac McFadyen•4/10/25, 2:33 PM

If they were dynamic they'd just be dynamic within those same regions.

ZackOP•4/10/25, 2:33 PM

Yea, I get it

ZackOP•4/10/25, 2:33 PM

much nicer than having to place them in all regions ourselves, and as I said, improvements will come and will be great to see them!

Wallacy•4/10/25, 2:39 PM

South América is also not invited to the party…. No Replicas here. We all of our D1 calls are router to US.

Chaika•4/10/25, 2:42 PM

Need Durable Objects there first. CF was talking about getting DOs in South America and India, would be nice

lambrospetrou•4/10/25, 2:50 PM

but in a way that's slightly sad because the replicas are just statically placed in all regions rather than dynamically in more places based on load

Smarter placement is on the roadmap

We will iterate on it over the next few weeks/months based on your feedback. Many ideas how to make placement better.

Aajgeiss0702 im personally hoping for some replica news, but we'll see

ajgeiss0702•4/10/25, 3:28 PM

eyyyyy

CChaika Need Durable Objects there first. CF was talking about getting DOs in South Amer...

gruntlord6•4/10/25, 3:50 PM

is there a list of where DO is available?

Ggruntlord6 is there a list of where DO is available?

Chaika•4/10/25, 3:51 PM

broad regions are documented here: https://developers.cloudflare.com/durable-objects/reference/data-location/#supported-locations-1 with ^2 next to not supported currently regions

Cloudflare Docs

Data location · Cloudflare Durable Objects docs

Jurisdictions are used to create Durable Objects that only run and store data within a region to comply with local regulations such as the GDPR or FedRAMP.

Chaika•4/10/25, 3:52 PM

there's a community site for showing where DOs spawn from each cf location/which CF locations support DOs: https://where.durableobjects.live/colo/GRU

Where Durable Objects Live

São Paulo, São Paulo, Brazil (colo)

Tracking where Durable Objects are created, wherever you are in the world.

gruntlord6•4/10/25, 3:54 PM

Thank you

Aalgads Two question about replication - does the storage pricing change at all? Right ...

Milan•4/10/25, 4:12 PM

Not sure about 1, but for your question about replication, yes, there is a cold start for non-active replicas. We only replicate to actively running replicas. If we were always replicating the primary's latest state, then we'd have to keep your replicas hot in memory, in which case you'd be paying for duration, even if you weren't using it.

Aalgads Two question about replication - does the storage pricing change at all? Right ...

lambrospetrou•4/10/25, 4:12 PM

does the storage pricing change at all? Right now I think it's something like .75 per GB. Does that get multiplied by the number of replicas or is the replica pricing baked in?

No! Replicas are not charged extra.

Samantas5855•4/10/25, 4:47 PM

guys, is there something wrong with D1?

Samantas5855•4/10/25, 4:48 PM

My python app that pushes using the api has been getting a lot of

Error inserting data for ant1: 500, {"errors":[{"code":7500,"message":"internal error; reference = e_28XXLS_43d7a89936774b92b106a4e344ee5141"}],"success":false,"messages":[],"result":null}

Error inserting data for ant1: 500, {"errors":[{"code":7500,"message":"internal error; reference = e_28XXLS_43d7a89936774b92b106a4e344ee5141"}],"success":false,"messages":[],"result":null}

SSamantas5855 My python app that pushes using the api has been getting a lot of ```Error inser...

lambrospetrou•4/10/25, 5:12 PM

This was 2 hours ago right? There was a small blip of HTTP errors for a few minutes that is fixed already: https://www.cloudflarestatus.com/incidents/20rzplhpvcsz

Cloudflare D1 Issues

Llambrospetrou This was 2 hours ago right? There was a small blip of HTTP errors for a few minu...

Samantas5855•4/10/25, 5:21 PM

Weird cause Im still having issues

Samantas5855•4/10/25, 5:21 PM

no errors but Im pushing stuff to D1

Samantas5855•4/10/25, 5:21 PM

and my workers pages api still doesnt show them

Samantas5855•4/10/25, 5:22 PM

I can't check the db right now to see if they are there

Samantas5855•4/10/25, 5:22 PM

Are you also Greek?

ajgeiss0702•4/10/25, 6:34 PM

this chart on the blog post gives me the impression that read replicas will pretty much always be under a second behind the primary.
is this impression accurate?

ajgeiss0702•4/10/25, 6:36 PM

also, when the sessions api was announced last year, IIRC it was stated that if you used the old (non-session) D1 api, the behaviour would be the same as it is without replication (always go to the primary) but now this graphic suggests otherwise. did this change?

Aajgeiss0702 also, when the sessions api was announced last year, IIRC it was stated that if ...

Chaika•4/10/25, 6:38 PM

the bottom left of that graphic "With using Sessions api"

ajgeiss0702•4/10/25, 6:38 PM

oh wrong graphic

ajgeiss0702•4/10/25, 6:38 PM

meant this one

ajgeiss0702•4/10/25, 6:40 PM

oh unless this is saying not using the session api (on a replica-enabled db) would be equivalent to using the sessions api with first-primaryfirst-primary?

Aajgeiss0702 oh unless this is saying not using the session api (on a replica-enabled db) wou...

Chaika•4/10/25, 6:43 PM

yea, I don't think the blog does a great job of explaining it, but you can see in the code itself, if just using the methods on the binding itself, it only goes primary
https://github.com/cloudflare/workerd/blob/04deab5ea50818faead9b18ce780d9a55ffccc9a/src/cloudflare/internal/d1-api.ts#L94

ajgeiss0702•4/10/25, 6:43 PM

ah ok, thank you for clearing that up for me!

ajgeiss0702•4/10/25, 6:45 PM

super excited to start using replicas!

Mozzy•4/10/25, 7:13 PM

Still getting

D1_ERROR: Network connection lost.

D1_ERROR: Network connection lost.

MMozzy Still getting `D1_ERROR: Network connection lost.`

ajgeiss0702•4/10/25, 7:36 PM

intermittently or every request?

ajgeiss0702•4/10/25, 7:37 PM

I get that too, but last I saw they were recommending people retry the request when reciving that error

Mozzy•4/10/25, 7:39 PM

occasionally, but, started a few hours ago. Could be read replication perhaps, but the error isn't helpful

ajgeiss0702•4/10/25, 7:40 PM

actually I just checked my logs, and ive seen more of those recently than usual too

ajgeiss0702•4/10/25, 7:40 PM

first one for me was April 10, 2025

Aajgeiss0702 first one for me was <t:1744311000:t>

Milan•4/10/25, 7:42 PM

timezone?

ajgeiss0702•4/10/25, 7:42 PM

i used discord's timestamp, which converts to your timezone

Aajgeiss0702 i used discord's timestamp, which converts to your timezone

Milan•4/10/25, 7:43 PM

Ah, that's why it was highlighted

ajgeiss0702•4/10/25, 7:43 PM

18:50 UTC

Milan•4/10/25, 7:44 PM

Any particular region?

ajgeiss0702•4/10/25, 7:44 PM

that might have been around when I enabled replication for that db, but i didnt record exactly when I enabled it so im not sure.
but the workers arent using the session api at all yet

MMilan Any particular region?

ajgeiss0702•4/10/25, 7:45 PM

the database is located in WNAM, let me check the colo of the requests with errors

ajgeiss0702•4/10/25, 7:48 PM

there doesnt appear to be a common colo. some in europe, some in asia, and a few more errors from YYZ and Chicago (which are the colos that my site gets the most requests from anyway)

ajgeiss0702•4/10/25, 7:49 PM

db id is 221100ba-5ab9-4cda-8cfa-69c17ea546ab221100ba-5ab9-4cda-8cfa-69c17ea546ab if it helps (account id is f55b85c8a963663b11036975203c63c0f55b85c8a963663b11036975203c63c0)

Yea, it makes more sense now, but in a way that's slightly sad because the replicas are just statica

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