Reverse Proxy for a Subdomain
The below Apache reverse proxy configuration lets another website be served through a domain. The example is a little contrived.
<VirtualHost 72.36.165.250:80>
ServerName proxied-site.samat.org
ProxyPass / http://google.com/
ProxyPassReverse / http://google.com/
</VirtualHost>
Cached Reverse Proxy
Use Apache's mod_disk to cache all requests made to a reverse proxy. For example, to setup a mirror to mirrors.kernel.org:
# Configure mod_disk_cache (usually in /etc/apache/mods-enabled.d/disk_cache.conf)
<IfModule mod_disk_cache.c>
CacheRoot /path/to/cache
</IfModule>
# Configure reverse proxy
<VirtualHost 72.36.165.250:80>
ServerName proxied-site.samat.org
CacheEnable disk /
ProxyPass / http://mirrors.kernel.org/
ProxyPassReverse / http://mirrors.kernel.org/
</VirtualHost>