Apple content caching is built into MacOS. A Mac mini connected to the in-plane wifi would likely do the trick. https://support.apple.com/guide/mac-help/what-

Apple content caching is built into MacOS. A Mac mini connected to the in-plane wifi would likely do the trick. https://support.apple.com/guide/mac-help/what-is-content-caching-on-mac-mchl9388ba1b/mac https://support.apple.com/guide/mac-help/what-is-content-cac... https://support.apple.com/en-us/HT204675 https://support.apple.com/en-us/HT204675