It's not really required to serve it from the same sub-domain always.
The most optimal solution would be to add the canonical link header when
serving using domain sharding.
But from a caching perspective, keeping the sharding consistent is
indeed beneficial (you can use crc32 on the image name e.g. this will
always return the same hash, and based on this do the domain sharding),
but from a SEO perspective, it doesn't matter if you just do it right
with canonical link.
Nikolaj Schomacker <mailto:sjum...@gmail.com>
11 May 2015 08:49
And a last thing you should be aware of if it applies to your case is
SEO. Using multiple domains for images is perfectly fine in the eyes
of Google, but be sure the same images is always served from the same
subdomain. Also be sure to have all of the subdomains added to the
same webmasters account as your main site.
~ Nikolaj
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Lucas Rolff <mailto:lu...@slcoding.com>
9 May 2015 20:24
What you should do, to increase the concurrent amount of requests, is
to use domain-sharding, since as Paul mentioned, browsers have between
4 and 8 (actually) simultaneous connections per domain, meaning if you
introduce static1,2,3.domain.com, you will increase your concurrency.
But at same time you also need to be aware, that this can have a
negative effect on your performance if you put too many domains,
there's no golden rule on how many you need, it's all a site by site
case, and it differs.
Also take into account your end-users connection can be limiting
things heavily as well if you put too much concurrency (thus negative
effect) - if you have a high number of concurrent requests being
processed it will slow down the download time of each, meaning the
perceived performance that the user see might get worse because it
feels like the page is slower.
- Lucas
Paul Smith <mailto:paul.j.smi...@gmail.com>
9 May 2015 20:03
On Sat, May 9, 2015 at 11:37 AM, Dennis Jacobfeuerborn
I am not an expert but I believe that most browsers only make between
4 to 6 simultaneous connections to a domain. So the first round of
requests are sent and the response received and then the second round
go out and are received back and so forth. Doing a search for
something like "max downloads per domain" may bring you better
information.
Paul
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Dennis Jacobfeuerborn <mailto:denni...@conversis.de>
9 May 2015 19:37
Hi,
I'm trying to find out how to effectively deliver pages with lots of
images on a page. Attached you see opening a static html page that
contains lots of img tags pointing to static images. Please also note
that all images are cached in the browser (hence the 304 response) so no
actual data needs to be downloaded.
All of this is happening on a CentOS 7 system using nginx 1.6.
The question I have is why is it that the responses get increasingly
longer? There is nothing else happening on that server and I also tried
various optimizations like keepalive, multi_accept, epoll,
open_file_cache, etc. but nothing seems to get rid of that "staircase"
pattern in the image.
Does anybody have an idea what the cause is for this behavior and how to
improve it?
Regards,
Dennis
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