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0 pointsarkh1y ago0 comments

> Of course this means >200ms to even hit the server when requests don't come from the same data center.

What world are you living in?

When using a European server from Europe I expect < 10ms ping. Less than 100ms for East coast server, less than 150ms for west coast ones. Only cases I'd expect more than 200ms (and not a lot more) is when hitting Australian servers.

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3 comments · 1 top-level

motorest1y ago· 2 in thread

> When using a European server from Europe I expect < 10ms ping.

I'm living in reality, where a globally available application needs to serve people all over the globe from Cloudflare's >300 data centers. This means a worker running in the same data center hosting your D1 databases might get ~10ms requests, but workers running on all other >300 data centers have to pay for the round trip to the primary data center whenever there is a cache miss.

The question you need to ask yourself is how come you failed to notice that. Do you have a good grasp on what you are doing?

arkhOP1y ago

> This means a worker running in the same data center hosting your D1 databases might get ~10ms requests

This is already waaaaaay too much. Same datacenter I expect nano seconds round trips. Datacenter to a datacenter on the other side of the world? Maximum 300ms. It was what you expected of game servers two decades ago. I don't see what could eat more than a couple dozen ms on the server with current hardware to make a 10ms round-trip become "> 200ms" and consider this a service you'd pay for.

manter1y ago

I think D1 actually requires multiple round trips, so the higher figures start to make some kind of sense.

I read a blog post about this but can't find it now. I did find this [release note](https://developers.cloudflare.com/d1/platform/release-notes/...) though.

They describe removing _at least_ two round trips back to the DC hosting the D1 instance.

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