Install Google mod_pagespeed for Apache HTTP

Website network performance is usually a very complicated process. Over the years, I’ve outlined many development techniques that can be used toward this goal. I’d heard about mod_pagespeed for some time, but never had the opportunity to experiment with it until recently. My first impression is that it is a VERY EASY means to gain performance improvements without reworking your existing website to implement techniques for establishing far-future expires, cache-busting, minification and static file merging.

Out of the box, most common techniques are automatically applied to your assets and a local server cache is created to utilize them.

Default installation is trivial:

  1. Download the latest version for your server architecture:




  2. sudo dpkg -i mod-pagespeed-*.deb

  3. sudo apt-get -f install
    (if required)

  4. sudo service apache2 restart

NOTE: Using tools like Firebug will enable you to see an HTTP Header indicating the version being used for your requests.

If you need to modify configuration from the default:

sudo vi /etc/apache2/mods-available/pagespeed.conf

For VirtualDomains, you can selectively enable and disable PageSpeed and many of it’s settings in your appropriate configuration files with:

<IfModule pagespeed_module>
ModPagespeed on

NOTE: Appending ?ModPagespeed=off to your URL will disable functions for that request.


Open Source Diffs/Compare Tools

I often find it necessary to compare separate branches of large programming projects in Java/JSP and PHP. Comparing single files manually proves to be very time consuming. I’ve found that software to do the recursive comparisons makes this much easier as it greatly reduces the effort.

Personally, I’m currently fond of WinMerge (on Windows platforms), though I’ve got a lot of peers that swear by Beyond Compare. Regardless their usage is very similar.


Beyond Compare: