I do not know what will be the conduct with the Apache with this particular config : - Pragma/Cache-Regulate has precisely the same purpose and also you give them 2 differents configs. It is Bizarre. - no-retailer mean the ressource shouldn't be cached. So how can it be revalidated ? https://listbell.com/story10845308/the-fact-about-%E3%82%AA%E3%83%B3%E3%83%A9%E3%82%A4%E3%83%B3%E3%82%AB%E3%82%B8%E3%83%8E-%E4%BB%AE%E6%83%B3%E9%80%9A%E8%B2%A8-that-no-one-is-suggesting