Duct tape enough services together and you can cache APT packages

The author replaced an unreliable apt-cacher-ng setup with a simpler Nginx-based pull-through cache for APT packages. After discovering widespread reliability issues with apt-cacher-ng (race conditions, corrupted files), they decided to leverage Nginx's built-in caching capabilities since APT repositories are essentially static HTTP file servers. They outlined goals including drop-in replacement compatibility, no custom software, support for Debian/Ubuntu and non-standard repos, and transparent behavior to client machines.