what is cache memory and why we must delete it ?

Site cache: The site cache stores old copies of your website pages to increase load speed. As a website owner, you can manually clear your site cache or set cache expiration dates for your website pages. Browser cache: Web browsers store HTML pages, CSS files, and various media in the browser cache.Nov 21, 2023

 So if you clear your browser's cache and temporary internet files regularly, this helps your computer or device run optimally—and doing so can help fix certain problems, like a website loading slowly, or formatting issues on a web page.Mar 13, 2023