[ Thanks to Andrew
Weber for this link. ]
“The use of loadable modules to enable optional
features is one of the nice things about Apache. This makes memory
management much more efficient than it would be if all of these
features were compiled in with the Apache code. This way, if you
need a certain feature, just enable the module that goes with it.
If you don’t need the feature anymore, just use the “a2dismod”
command to disable the module, restart Apache, and the memory that
that module had used will be released for other purposes.“If you look in the /etc/apache2/mods-available directory,
you’ll see that there are a lot of other modules that do come with
Apache. Not all of them are enabled.“actions.conf dav_fs.load mime_magic.load
actions.load dav.load negotiation.conf
alias.conf dav_lock.load negotiation.load
alias.load dbd.load php5.conf
asis.load deflate.conf php5.load”