Comments on: Improve Your YSlow Grade Using .htaccess

By: Abhimanyu

Abhimanyu — Sun, 20 Feb 2011 18:57:38 +0000

Thanks very much for giving such a great detail..!!
I’m really impressed by this way..!!
It reduces load time of my site really up-too great extent..!!
Thanks..!!

By: Michael Hettwer

Michael Hettwer — Tue, 25 Jan 2011 17:48:30 +0000

Thanks for this nice article. – I improved my Yslow Grade with your tipps!

Many thanks from Germany.

Michael

By: Dave

Dave — Sun, 25 Oct 2009 04:51:18 +0000

Hi,
The code for .htaccess contains – Header set Expires “Thu, 15 Apr 2012 20:00:00 GMT” which means that all the images will expire on 15th April 2012 at 20:00:00 .
But how can i change the expire date to something like the cache shud become stale always after 14days. i mean i want to implement something like this ->
$expires = 60*60*24*14;
header(“Cache-Control: maxage= $expires”);
header(‘Expires: ‘ . gmdate(‘D, d M Y H:i:s’, time()+$expires) . ‘ GMT’);

How can i do this?

One more thing, setting Expires is enough, or we also need to set Cache-Control, becoz Expires is something related to HTTP/1.0 and Cache-Control is related to HTTP/1.1

Thank You,
Dave

By: Kardeno

Kardeno — Sat, 10 Oct 2009 17:44:18 +0000

Great optimization tip. I’m going to try it straight away.

Thanks Eric.

By: Eric Wendelin

Eric Wendelin — Mon, 21 Sep 2009 17:31:43 +0000

@kasap: Yes. ETags being off will improve your YSlow score. ETags should be turned off unless you really know how to use them.

By: kasap

kasap — Mon, 21 Sep 2009 17:27:50 +0000

I have a question:
Setting off Etags is going to affect the grade on the “Configure entity tags (ETags)” category on Yslow?

By: Eric Wendelin

Eric Wendelin — Wed, 16 Sep 2009 16:05:08 +0000

I’ve posted this with improvements for gzipping and cache-control to GitHub: http://gist.github.com/188105

By: Eric Wendelin

Eric Wendelin — Wed, 16 Sep 2009 16:04:12 +0000

@Rolf: In your case I think it’s best to rename the file.

By: Pierre

Pierre — Wed, 06 May 2009 10:08:09 +0000

Ok, i found by myself…
It’s because i use GoogleGears so YSlow was a little missed :).

Thanks anyway

Amicably,

Pierre

By: Rolf

Rolf — Tue, 05 May 2009 09:58:02 +0000

Good article..

So, what do we do when we setup caching methods like this (e.g. for images) and you replace an image (jpg) on a website with a newer version (let’s say a better cropped one for example). Do I have to wait 2 weeks (if I set ExpireDate to that) before I see the new picture on the site, or can I somehow force the browser of the client to d/l the new version (even without adding a @timestamp to the image src=”" in the code)…?

Versioning js/css files seems like an option, though a lot of work (renaming, updating files that include the versioned file, etc.).. but they do change a lot for projects usually.

Rolf