I'm running a CentOS server and I want to save bandwidth, make pages faster, all that. How can I turn on http compression? Is it a module I enable for all sites? Can it be that simple?
Add this to your apache config:
LoadModule deflate_module /usr/lib/apache2/modules/mod_deflate.so <Location /> AddOutputFilterByType DEFLATE text/html text/plain text/xml text/css </Location>
Obviously if the path your system uses for apache modules differs then you'll need to use the correct path.