Yslow score: Add Expires headers - Configure entity tags (ETags) - Make fewer HTTP requests

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jvieille's picture
Posted by jvieille on August 6, 2011 at 7:07am

I am trying to optimize my sites
- D6 multisites one codebase, separate databases
- APC, cacherouter, Authcache, Boost

Yslow rates F for the followings

Grade F on Make fewer HTTP requests
This page has 3 external stylesheets. Try combining them into one.
This page has 22 external background images. Try combining them with CSS sprites.

Grade F on Add Expires headers
There are 41 static components without a far-future expiration date.

Grade F on Configure entity tags (ETags)
There are 40 components with misconfigured ETags

Is this important? How to improve?

thanks

Comments

A lot of that can be

Posted by vacilando on August 6, 2011 at 12:02pm
vacilando's picture

A lot of that can be addressed by using http://drupal.org/project/advagg, http://drupal.org/project/cdn and http://drupal.org/project/css_emimage.


---
Tomáš J. Fülöpp
http://twitter.com/vacilandois

This article should help

Posted by btopro on August 7, 2011 at 5:23pm
btopro's picture

http://www.morningtime.com/Drupal-6x-Performance-Guide/513

Gives you lots of tips about overall performance both in terms of best practices, module selection and serve configuration. I think I had 90+ on Yslow and 95+ on Google PageSpeed. ETags and some of the projects mentioned above definitely help. When doing a CDN I also had a static.mysite.com which was configured to only send "static" data so it would never recheck the things coming across there (images). Great for production environments.

Ex Uno Plures
http://elmsln.org/
http://btopro.com/
http://drupal.psu.edu/

This article really helped

Posted by vasrush on October 29, 2011 at 6:16pm
vasrush's picture

"Morning time" link is a treasure.
Thanks

Yslow A after fixing Etags

Posted by JohnnyW on February 24, 2014 at 1:35am
JohnnyW's picture

in htaccess file, for root domain, just add this to it

<ifModule mod_headers.c>
Header unset ETag
</ifModule>
FileETag None

Clear cache, that's it :)

Fixing Etags

Posted by khanis on January 6, 2015 at 3:57am
khanis's picture

My hosting plan is with godaddy and my server is windows, shall i implement this same thing in my webconfig file. .htaccess is not working for me.
www.limraseoweb.com
Please let me know..

Removing ETags through the web.config

Posted by themic8 on January 6, 2015 at 9:18am
themic8's picture

Khanis,

Here is a post to help you: http://www.saotn.org/remove-etags-http-header/

here's my magic performance

Posted by btopro on January 7, 2015 at 4:13am
btopro's picture

here's my magic performance conf file; should be able to throw that into an .htaccess file as well if on shared hosting

https://github.com/btopro/elmsln/blob/master/docs/zzz_performance.conf

Ex Uno Plures
http://elmsln.org/
http://btopro.com/
http://drupal.psu.edu/

Thank you!

Posted by themic8 on January 7, 2015 at 9:47am
themic8's picture

Thanks for the update!

High performance

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