Sometimes userland tmpfs seems attractive. XDG already provided the solution.
All articles of tag: HOWTO
Fast APT with tmpfs (with plenty DRAM) and Apt-Cacher NG@article
APT can be faster with a bit configurations.
Why GUI on Debian is slow on Intel PCs, and its solution@article
Debian GUI on modern Intel CPU PC tends to be slow. This article explains why and its solution.
LVM LV and filesystem extend on LVM over LUKS system.@guide
Extend (root) ext4 filesystem on LVM LV over LUKS.