Setting up an ‘Apt-Cache’ Server Using ‘Apt-Cacher-NG’ in Ubuntu 14.04 Server
Apt-Cacher-NG is a caching proxy server (or apt proxy) for Debian based distributions like Ubuntu, Kubuntu, Xubuntu, Edubuntu, Linux Mint, etc, which is used to
apt-cache
Understanding APT, APT-Cache and Their Frequently Used Commands
If you’ve ever used Debian or a Debian based distribution like Ubuntu or Linux Mint, then chances are that you’ve used the APT package system