Caching to disk improves performance, but cached data are optional and may be purged when additional free space is needed. This explains how that’s performed by the deleted service.
AssetCache
Performed by CacheDelete, it first looks at a wide range of macOS caches, and only at the end purges snapshots, to free up space when it runs short.
Details of how the Content Caching server handles a cache macOS security data update, and both client and server handle an App Store update.
Using Activity Monitor and command tools to assess performance of a content caching server, and diagnosing problems from the log.
The Eclectic Light Company 