mod_proxy
We can easily distribute different duties to backend servers by configuring a mod_proxy front end. Consider the following:
Request ForMaps To
/cgi-bin/http://cgiserver.example.com/cgi-bin/
/images/http://imageserver.example.com/images/
/apps/http://appserver.example.com/apps/
Configure Apache with the following:
ProxyPass /cgi-bin/ http://cgiserver.example.com/cgi-bin/
ProxyPassReverse  /cgi-bin/ http://cgiserver.example.com/cgi-bin/
ProxyPass /images/ http://imageserver.example.com/images/
ProxyPassReverse  /images/ http://imageserver.example.com/images/
ProxyPass /apps/ http://appserver.example.com/apps/
ProxyPassReverse  /apps/ http://appserver.example.com/apps/

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