I am wondering what it would take to directly use get.jenkins.io instead of 
update-center.
update-center.json is available from the mirror as well  as you can see here 
-> https://get.jenkins.io/updates/current/update-center.json?mirrorlist

The challenge is because the json is potentially generated every 3 minutes, 
it's hard for mirrors to stay up to date but we still control some of them. If 
no mirrors have the file with the correct checksum, then it fallback to a 
hardcode mirror that we configured.

We could also ask mirrors maintainers to sync "/updates" every three minutes, 
it doesn't represent a lot of files.
Also, we must ensure that mirrorbits scan files from /updates every few minutes 
to generate file hashes.



On Tue, Nov 17, 2020, at 7:03 PM, Daniel Beck wrote:
> 
> 
> > On 17. Nov 2020, at 15:01, Rick <[email protected]> wrote:
> > 
> > 
> > You mean generate two or more versions of update-cener.json files? For 
> > example, update-center.json and update-center-zh.json ? Am I right?
> 
> Basically this, yes.
> 
> Re mirrors, did you test using the regular update site recently, and 
> still encounter performance issues? I think we used a pretty badly 
> outdated Geo IP DB until a few months ago, so if you haven't checked in 
> a while, it makes sense to retry using the regular URLs to see how well 
> this works now.
> 
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