[arch-mirrors] CDN based/caching mirror?
s at sevki.org
Mon Mar 2 17:54:48 UTC 2020
I'll just leave the one I did when I was at CF here then :)
On Thu, Feb 27, 2020 at 8:46 PM Kristian Klausen via arch-mirrors <
arch-mirrors at archlinux.org> wrote:
> On 26.01.2020 17.19, Kristian Klausen via arch-mirrors wrote:
> > Hi
> > I'm considering setting up a Arch Linux mirror and I'm considering a
> > different design.
> I just got time to implement this and the setup looks like this:
> Cloudflare -> Cloudflare Workers -> Backblaze B2 bucket <- Tier1 mirror
> The files is synced from mirror.ams1.nl.leaseweb.net every hour to the
> Backblaze B2 bucket and they are fetched from the bucket with the help
> of a Cloudflare Workers script.
> Cloudflare is configured to cache everything (size <=2GB*), database
> files is cached for 5 minute everything else is cached for 24 hours.
> * CF is sponsoring a plan with a higher limit than the 512MB default
> I have done some quick testing, and time to first byte isn't impressive
> (at least not when downloading from Europe), but the speed is acceptable
> (80-100MB/s is achievable if the file is cached, and 8-12MB/s if not
> (tested from Europe)).
> To make it easier to implement, I took some shortcuts:
> * Directory listing isn't implemented
> * "latest" files isn't synced
> * Only packages in "pool/" is synced, the package files in the different
> repo isn't synced, but if you request a package
> (\.pkg\.tar\.(xz|zst)(|.sig)$) it is automatic retrieved from the pool/
> directory. This means that you can download ex Firefox from both:
> I'm not sure if the shortcuts is acceptable, but it can be fixed if it
> is a issue.
> Also please note that: archive, other and sources isn't synced.
> Feel free to try it out: https://archlinux.amirror.xyz/
> Best regards
> Kristian Klausen
> > So instead of mirroring the whole thing, the idea is to mirror only
> > the database files (core.db etc) and download the packages on demand
> > from a Tier 1 mirror (and let nginx cache them). By doing it that way,
> > I only download requested packages from the Tier 1 mirrors, instead of
> > downloading the whole thing (saving Tier 1 bandwidth).
> > To provide even better performance a CDN (ex: Cloudflare) could be
> > used to provide more caching. So we end up with a setup like this:
> > Cloudflare -> Nginx cache -> Tier1 mirrors (nginx with multiple upstream)
> > Do I miss something? Is this a bad idea?
> > If I do setup a mirror like that, is there any chance it could be
> > added as a official mirror?
> > Best regards
> > Kristian Klausen
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