Doesn't look like this has been mentioned yet, but looks like Caching Server, once only available with Server.app seems to be built into the OS as Content Caching in System Preferences > Sharing.
This is awesome for home users with multiple Macs and iOS devices. If you're not familiar, caching server caches iTunes/iOS/Mac AppStore and iCloud content accessed on a local network. When another device goes to access or download the same content while on the same network, it downloads from the caching server instead of the internet.
This is awesome for home users with multiple Macs and iOS devices. If you're not familiar, caching server caches iTunes/iOS/Mac AppStore and iCloud content accessed on a local network. When another device goes to access or download the same content while on the same network, it downloads from the caching server instead of the internet.