Web Caching

Why Browser Send No Cache In Http Request Cache Control Header

When you browse any web page ( google.com, yahoo.com, bing.com ) in a modern web browser, if you inspect the request HTTP headers, you can find the cache-control : no-cache header, this header is always used in the HTTP response header. But why it is used in the HTTP request header, this article will tell you the …

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How Web Caching Works In CDN ( Proxy ) Chain Use Cache-Control Http Header

When a web browser requests a web page from the original web server, the request may go through several intermediary proxy or CDN servers like the below picture. Each node in the chain ( includes both client browser, CDN proxy server, and original webserver ) can cache the requested web page resources follow their own …

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