Heuristic cacheHeuristic caching is the default behavior of browser caching (i.e., for responses without Cache-Control), which is not simply "not caching", but implicitly caching based on the so-called "heuristic cache". HTTP is designed to cache as much as possible, so even if Cache-Control is not specified, the response will be stored and reused if certain conditions are met. This is called heuristic caching.HTTP/1.1 200 OKContent-Type: text/htmlContent-Length: 1024Date: Tue, 22 Feb 2022 22:22:22 GMTLast-Modified: Tue, 22 Feb 2021 22:22:22 GMTCache durationThe formula for calculating the cac...