One of the most underutilized and somewhat secret features in the Chrome browser is the built-in net-tools which is accessed by entering chrome://net-internals into your address bar. It will immediately begin to start capturing network data, which you can stop by going to Capture at the top and clicking stop. You are able to see just about every aspect of Chrome’s internals from this page including cache hits and misses. You can even see Chrome’s DNS cache on the DNS screen.
Among the various properties you are able to extract and analyze are:
Proxy, Events, Timeline, DNS, Sockets, Alt-Svc, HTTP/2, QUIC, SDCH, Cache, Modules, HSTS, Bandwidth, Prerender
Here is an example which illistrates that Chrome has hit an already cached image that was served via AWS CloudFront:
https://images-na.ssl-images-amazon.com/images/I/41iDwCxNyrL._SL160_SL90_.jpg HTTP/1.1 200 OK Content-Type: image/jpeg Content-Length: 1863 Server: Server Date: Tue, 20 Sep 2016 18:20:53 GMT X-Amz-IR-Id: cbd29532-d7ba-46f3-be44-6e9cfe5c3bc3 Expires: Mon, 25 Aug 2036 01:51:56 GMT Cache-Control: max-age=630720000,public Last-Modified: Mon, 04 May 2015 19:29:16 GMT Access-Control-Allow-Origin: * Age: 84801 X-Cache: Hit from cloudfront Via: 1.1 86f2bbfea57d6217ce2d279b84ca3743.cloudfront.net (CloudFront) X-Amz-Cf-Id: xwktxgxfWZEfRhhY6VKwdecBh-hMrnNkt1U-UIELeIqdUW58Oq7QoQ=