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Faster page loads with mod_deflate and mod_expires

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Homepage » Forum Index » activeCollab 1.0 and Newer / Tips and Tricks » Faster page loads with mod_deflate and mod_expires

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#1
Terry Johnson on Jan 2. 2008. 9:50 am
I'm using aC over a VPN quite a lot, and therefore wanted to make it go like a rocket. The following additions to the Apache2 config seem to do the trick:

  SetOutputFilter DEFLATE
  SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$  no-gzip dont-vary
  SetEnvIfNoCase Request_URI \.pdf$ no-gzip dont-vary
  SetEnvIfNoCase Request_URI attachments no-gzip dont-vary

  ExpiresActive On
  ExpiresByType image/gif A21600
  ExpiresByType image/jpeg A21600
  ExpiresByType text/css A21600
  ExpiresByType application/x-javascript A21600


Note that js.php serves its content as text/js, so it doesn't get caught by those expiry rules.
Terry Johnson
VP Technology, Scribendi Inc.
http://www.scribendi.com - Editing, Proofreading and more...
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#2
Ilija Studen on Jan 4. 2008. 12:07 pm
Thanks for sharing.

activeCollab joins all CSS and JS files and serves them compressed (gzip-ed), but you can still improve performance by properly configuring your server.
activeCollab team member
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#3
Terry Johnson on Jan 4. 2008. 12:27 pm
This really helps with the icons and TinyMCE, and it eliminates loads of "if-modified-since" HTTP requests, so page rendering finishes much faster.

I can also report that thus far it didn't break anything, which is nice.
Terry Johnson
VP Technology, Scribendi Inc.
http://www.scribendi.com - Editing, Proofreading and more...
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#4
ebatte on Apr 7. 2008. 10:06 pm
I'd like to try this but what file are you actually modifying when you say apache2 config? httpd.conf?

Thanks,
Eric
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#5
Terry Johnson on Apr 7. 2008. 10:25 pm
The simplest method is to use a .htaccess file, but you could also put these directives in a Directory block of httpd.conf or the virtual host .conf file for your aC installation, depending on your preferences and setup.

Be sure to check that you have mod_expires installed and enabled, and to restart Apache to re-read the .conf files if you chose to modify them.
Terry Johnson
VP Technology, Scribendi Inc.
http://www.scribendi.com - Editing, Proofreading and more...
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#6
ebatte on Apr 8. 2008. 8:44 am
Sorry, but would you mind posting a more explicit how-to? I'm not that experienced with modding apache. Specifically, where is the "Directory Block" in httpd.conf (what am I looking for)?

Thanks again,
Eric
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#7
Terry Johnson on Apr 10. 2008. 8:28 am
Hi Eric -

The best places to dive into the subject of apache configuration are probably their manual pages on .htaccess files and configuration sections:

http://httpd.apache.org/docs/2.0/howto/htaccess.html

http://httpd.apache.org/docs/2.0/sections.html
Terry Johnson
VP Technology, Scribendi Inc.
http://www.scribendi.com - Editing, Proofreading and more...
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#8
ebatte on Apr 10. 2008. 3:20 pm
Thanks. Got it working.

Eric
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#9
digitalvomiting on Apr 16. 2008. 9:50 am
Got the same options running with Beta 1.1 , cuts on the loading time indeed, alhough I think that it can go faster ...

Ilija, are there any debug options to turn off inside of the beta version (except that one in config/config.php) ?
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#10
Ilija Studen on Apr 17. 2008. 12:57 am
digitalvomiting:
Ilija, are there any debug options to turn off inside of the beta version (except that one in config/config.php) ?


No, there are not.

Set it to 2 and you will have execution log saved in /logs folder. Set it to 1 to have a brief error message displayed to user and details sent to administrator. You can find more information about DEBUG option in Troubleshooting activeCollab article.
activeCollab team member

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