I know this is selfhosted so most people here are hobbyists, but it’s a ton of work to selfhost in enterprise setting. I’d wager 90%+ of people using image registries are using Docker Hub, GHCR, or AWS ECR.

ZFS doesn’t really hog memory, rather it consumes almost all available memory as cache. But it frees it as soon as it’s needed.

It seems like the libraries are server specific. So it’ll probably just be saved to whichever server owns the library you’re using.