@Frédéric, the part with the spec you point to suggests that caches are not able to cache no-retail outlet content material: The "no-keep" response directive suggests that a cache Need to NOT store any A part of possibly the immediate request or response. 知乎,让每一次点击都充满意义 —— 欢迎来到知乎,发现问题背后的世界。 One Resolution would be https://tarot-pago-por-bizum69462.dm-blog.com/36654739/the-fact-about-alquiler-de-grúa-hidráulica-en-dos-hermanas-that-no-one-is-suggesting