Varnish Cache
Varnish Cache is an open source, state of the art web application accelerator. You install it on your web server and it makes your website fly.
How to install Varnish-Cache
# rpm --nosignature -i http://repo.varnish-cache.org/redhat/varnish-3.0/el5/noarch/varnish-release-3.0-1.noarch.rpm
and then run
# yum install varnish
The --no-signature is only needed on initial installation, since the Varnish GPG key is not yet in the yum keyring.
How to Uninstall Varnish-Cache
Simply run:
# yum erase varnish
This should remove the respiratory of Varnish-Cache from your system.