Variable HTTPFileServerSettings.cacheControl
Cache control to control where cache can be saved, if at all, such as proxies, the storage, etc.
Leave null or empty to not emit any cache control directives other than max-age if maxAge is set.
Common values include: public for making a shared resource cachable across multiple users or private for a response that should only be cached for a single user.
See https://developer.mozilla.org/de/docs/Web/HTTP/Headers/Cache-Control