[Jenkins-infra] Cost modeling for Azure

[Christopher Orr]

> On 06 Jul 2016, at 18:59, R. Tyler Croy <tyler at monkeypox.org> wrote:
> 
> (replies inline)
> 
> On Wed, 06 Jul 2016, Kohsuke Kawaguchi wrote:
> 
>> Right now cell E40 has $22K and not $90K. Am I looking at the wrong cell?
> 
> 
> The initial modeling was all guesstimates done during the negotiation of the
> deal. I'm still figuring out the pricing on the usage of the CDN for
> distribution based on actual numbers from mirrors.jenkins.io. The number in the
> sheet "CDN pricing" from O34 plus the total from "Infra Costs" puts us closer
> to 85k annually.
> 
> 
> Since we're going to actually have a budget, one of the things I started
> thinking about while counting sheep last night was ways to make our
> distribution more efficient/cheaper.

Is using the Azure CDN a hard requirement of the deal with Microsoft?

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 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.

Regards,
Chris