[Jenkins-infra] Cost modeling for Azure

[Andrew Bayer]

I'd be interested in a modernized update center metadata thing.

On Aug 20, 2016 10:47 AM, "R. Tyler Croy" <tyler at monkeypox.org> wrote:

> (replies inline)
>
> On Sat, 20 Aug 2016, Christopher Orr wrote:
>
> >
> > Is using the Azure CDN a hard requirement of the deal with Microsoft?
>
>
> Yes.
>
>
> > As CDN usage seems to account for ~70% of the total costs, would
> sticking to
> > the existing mirror network, or using the Fastly account that we have, be
> > potential alternatives?
>
>
> I'm waiting for some people to get done with their vacations at Microsoft
> to
> continue the converation on this. I'm not sure whether we're paying the
> "retail
> price" or something else for our bandwidth. That would make a big
> difference,
> either way I think there are things we can/should do to reduce bandwidth
> usage[0].
>
>
> > I also note that the projections are based on our current mirror
> locations
> > (i.e. in Zones 1 & 2 only), but Azure CDN will also serve files from the
> > other three (more expensive) zones, depending on the user???s location
> ??? so
> > if there are a lot of users in South America and India (which I vaguely
> > recall there being), the costs could end up being a fair bit higher.
>
> The zones are opt-in from my understanding. If we wish to serve geo-local
> files
> in South America, that's what would cost more. If we're going to serve
> content
> globally from Zone 1/2 then that's no different than content served to a US
> downloader.
>
>
>
>
>
> [0[ I think update-center.json makes up a significant portion of our
> bandwidth
> usage, and implementing a more modern/lighter weight manifest setup
> (instead of
> a 1MB json file), could be something to greatly reduce the size downloaded
> daily by every Jenkins instance (for example). This is something I'm
> interested
> in hacking on after Jenkins World (time permitting).
>
>
>
> - R. Tyler Croy
>
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