I'm using a local apt-cacher-ng to save bandwidth, and apt really flies - I'd recommended it if you have (obviously) 2+ (debian, Ubuntu or derivatives) machines

I'm using a local apt-cacher-ng to save bandwidth, and apt really flies - I'd recommended it if you have (obviously) 2+ (debian, Ubuntu or derivatives) machines. Makes even the occasional network slowdown much more tolerable... Just disable it when doing dist-upgrade or do-release-upgrade.