High Sierra sees the Caching service moved out of macOS Server and into the client macOS. This means administrators no longer need to run the Server app on caching servers. Given the fact that the Caching service only stores volatile data easily recreated by caching updates again, there’s no need to back the service up, and it doesn’t interact with users or groups, so it’s easily divested from the rest of the Server services. And the setup of the Caching service has never been easier. To do so, first open System Preferences and click on the Sharing System Preferences pane. From here, click on the checkbox for Content Caching to…