How much traffic will update use?

[datalove]

@unman

If you have a number of templates cloned from the same base, then install
a caching proxy. I package apt-cacher-ng for Qubes, which works well.
This reduces the amount to be downloaded.

Hello,

ah yes, that’s interesting.
I can’t find, in the Qubes documentation, how to set this up and use it properly?