This tutorial will augment the technique of automatically enabling WP-Cache during heavy load with the ability to switch to a low-bandwidth WordPress theme at the same time.
Few reasons to do this
1. WP-Cache messes with your site statistics, so you do not want to leave it on when your site is not being hammered.
2. You don’t want to use a bandwidth efficient theme all the time because it’s not pretty-lookin’.
3. During traffic storms (e.g. Digg Effect), every 1/100 second optimization tweak counts.
4. If you host your site on a shared host, you will most likely have a bandwidth quota. Switching to a leaner theme conserves your bandwidth (duh!)
5. If you host your site on a home connection, your upload is not up to par with most hosting services, so you need to use that small pipe efficiently.
6. Each “IMG” tag, even if it’s a 1×1 pixel gif, requires an HTTP request to your web server. If you have 10 images on your page, and 10 users are loading your page, that’s 100 simultaneous calls to your server already. Leaner themes usually means less/no images, giving Apache some break.
7. If you’re server is non-uber, you don’t deserve to administer it.