![]() If your network uses multiple content caches, they can be configured as “peers.” Peers can communicate and share cached software with one another. You can also use multiple content caches. Because these clients do not need to retrieve copies of the update from outside of the LAN, they can retrieve the update much faster. Retrieving content from a local network is often faster than using the internet. When the next client on the network initiates a download of the same update, the update will be retrieved from the content cache rather than downloaded via the internet from the App Store. This initial download of the update will likely be slower than future downloads that leverage content caching. If a client on your company network downloads a macOS update, then a copy of the update will be made and stored in the content cache. Once the content cache exceeds this specified amount of space, it will delete content that hasn’t been used recently to make room for the most recent request. An alternate location can be chosen, and you can also specify the amount of space that should be used for the content cache. The default location for a content cache is the boot volume of your Mac. These devices are called “clients,” and the space where the copies are stored is called a “content cache.” ![]() When content caching is enabled on your Mac, a copy will be made of all content that’s downloaded on networked devices. ICloud data caching (available for photos and documents)Īpple Books content and GarageBand downloadable contentĪ full list of supported content types can be found here. Xcode downloadable components, such as simulators (requires Xcode 10.2 or later) IOS updates, macOS Updates and internet Recovery images (this requires macOS 10.13.5 or later) Not all types of content can be caches, but macOS has built-in support for most major types of software that you’ll use in the workplace. Content Types Supported by Content Caching on Mac In the former case, even a network with multiple subnets (if they share the same public IP address) can use a single content cache. However, you can configure it to provide content caching for all of your local network’s subnets that share a public IP address or for any combination of subnets of publicly accessible IP addresses. Apple devices running on iOS 7 or later and OS X 10.8.2 or later will, without any configuration necessary, automatically contact content caches within their proximity.Ĭontent caching is limited to a specific subnet by default. You can only use content caching on networks with publicly routable IP addresses or on networks with a NAT environment for the content cache and all devices. Content caching can still work if your Mac is using a Wi-Fi connection instead, but you will probably notice slower performance than if you used Ethernet alone. In Apple’s support documentation, they strongly recommend that you set up content caching on a Mac computer that uses a single-wired Ethernet connection as its only form of connection to the network. Network Requirements for Content Caching on Mac Content caching can extend beyond iCloud or App downloads as well, including Mac apps, books, software updates, Xcode components, and more. For instance, if users have downloaded data from their iCloud account, it will be cached so local Mac, iPhone, iPad, and Apple TV devices can download it – without having to retrieve copies of the content from outside of the LAN. Connected Apple devices can then retrieve the content without having to retrieve copies of the content from outside of the LAN.Ĭontent caching can optionally apply to iCloud data as well. This is accomplished by storing local copies of previously downloaded content on a Mac computer’s content cache. Here’s a brief overview of what we’ll cover:Ĭontent caching is a macOS service that speeds up software installation on Mac computers, iOS devices, iPadOS devices, and Apple TV devices. In this guide, we’re going to do a deep dive into what content caching is, how it’s changing, and how you can accomplish simple and advanced configurations for it. At WWDC 2020, Apple announced a few exciting changes that will make content caching even more powerful on macOS Big Sur. Content caching is a powerful tool that speeds up software installation on Apple devices on a local network.
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