I don't determine what will be the conduct with the Apache using this config : - Pragma/Cache-Control has the identical purpose and you simply give them 2 differents configs. It really is Unusual. - no-keep signify which the ressource shouldn't be cached. So how can or not it's revalidated ? https://getsocialsource.com/story6438389/the-smart-trick-of-%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-discussing