Why sometimes I press F5 and the page is displayed correctly. And sometimes it is incorrect — you have to press Ctrl+Shift+R?

Hello! Why sometimes when I write code, I hit F5 and everything displays and works. And JS, and CSS. And sometimes that's not enough - you have to press Ctrl+Shift+R. I know that the second option of reloading the page ignoring the cache. But I wonder why sometimes it's necessary to ignore, and sometimes he is ignored?
March 12th 20 at 08:08
1 answer
March 12th 20 at 08:10
cache-control: private, max-age=86400, stale-while-revalidate=604800
expires: Wed, 10 Oct 2018 17:26:30 GMT
last-modified: Wed, 10 Oct 2018 17:26:30 GMT

read and understand hederами that control caching.

These guidelines we can say that it is not required to recheck the data changes on the server
up to a certain time.

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