Judging by the comments here, there seems to be some confusion.<p>This is exactly like long-lived cache settings today. Right now browsers send a request on basic reloads and get back a 304 from the server which states that nothing has changed. All this setting does is let the server tell the browser to skip that check&#x2F;roundtrip instead of wasting the time&#x2F;bandwidth on confirming with a 304 after the initial load.<p>The browser is still completely in control here and can do a full reload or just reload all the time if it wants to. Web scrapers and other HTTP clients are unaffected.