Re: faulty link

From: Dave Page <dpage(at)pgadmin(dot)org>
To: Dagfinn Ilmari Mannsåker <ilmari(at)ilmari(dot)org>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Josef Šimánek <josef(dot)simanek(at)gmail(dot)com>, Erik Rijkers <er(at)xs4all(dot)nl>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: faulty link
Date: 2022-02-10 16:07:18
Message-ID: CA+OCxownRvyk1WBkhuuVes9F3QXEvVDYFEy-cv0vn4J8zdD3Bg@mail.gmail.com
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On Thu, 10 Feb 2022 at 15:53, Dagfinn Ilmari Mannsåker <ilmari(at)ilmari(dot)org>
wrote:

> Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> writes:
>
> > =?UTF-8?B?Sm9zZWYgxaBpbcOhbmVr?= <josef(dot)simanek(at)gmail(dot)com> writes:
> >> čt 10. 2. 2022 v 15:35 odesílatel Erik Rijkers <er(at)xs4all(dot)nl> napsal:
> >>> The provided link
> >>> https://www.postgresql.org/docs/release/
> >>> leads to
> >>> https://www.postgresql.org/docs/release/14.2/
> >>> which gives 'Not Found' for me (Netherlands)
> >
> >> Thinking about that again, the 14.2 release just happened. Could it be
> >> just a matter of propagating new release info to mirrors?
> >
> > The link works for me, too (USA). Stale cache seems like a reasonable
> > explanation for the OP's problem --- maybe clearing browser cache
> > would help?
>
> I'm getting a 404 as well from London. After trying multiple times with
> curl I did get one 200 response, but it's mostly 404s.
>
> It looks like some of the mirrors have it, but not all:
>
> $ for h in $(dig +short -tA www.mirrors.postgresql.org); do echo -n "$h:
> "; curl -i -k -s -HHost:www.postgresql.org "https://$h/docs/release/14.2/"
> | grep ^HTTP; done
> 72.32.157.230: HTTP/2 200
> 87.238.57.232: HTTP/2 404
> 217.196.149.50: HTTP/2 200
>
> $ for h in $(dig +short -tAAAA www.mirrors.postgresql.org); do echo -n
> "$h: "; curl -i -k -s -HHost:www.postgresql.org "https://[$h]/docs/release/14.2/"
> | grep ^HTTP; done
> 2001:4800:3e1:1::230: HTTP/2 200
> 2a02:c0:301:0:ffff::32: HTTP/2 404
> 2a02:16a8:dc51::50: HTTP/2 200
>

Despite the name, they're not actually mirrors. They're varnish caches. By
the looks of it one of them cached a 404 (probably someone tried to access
the new page before it really did exist). I've purged /docs/release now,
and everything is returning 200.

--
Dave Page
Blog: https://pgsnake.blogspot.com
Twitter: @pgsnake

EDB: https://www.enterprisedb.com

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