Save bandwidth by caching Apple OS updates, App updates, & iCloud content

When Apple releases OS updates it chews through paltry 1 terabyte Comcast quotas pretty quickly.

Email that I'm about to reach my bandwidth quote

Fortunately macOS Monterey ships with a somewhat hidden “Content Sharing” feature that can speed up these downloads and saves on bandwidth. When enabled it will download OS updates, Apps, and iCloud content once, cache them to disk, and other devices will discover the content on your network before trying to download it over a precious Comcast connection.

How to turn on Content Caching

Turning this on is really easy. Open “System Preferences” and click “Sharing”.

System Preferences

Next click on the “Content Sharing” checkbox to enable it. That’s it! You’ll have to reboot other machines on your network to discover this machine.

System Preferences Content Sharing

This feature use to only be available on macOS server, so I’m really pleased to see Apple bringing this to macOS for the new reality of homes filled with HomePods, Apple Watches, iPads, iPhones, and Macs. Not only does it save bandwidth, but it should speed up installation times.