How does segmentfault respond so quickly without caching?

The Response Headers of the SF website are as follows: How can each page respond immediately without caching?

The response header of the SF website is as follows:

When cache is not allowed, how does one respond to each page immediately?

Reply content:

The response header of the SF website is as follows:

When cache is not allowed, how does one respond to each page immediately?

Amount... The information displayed in the http header is that the browser does not cache js, css, images, and other data, and the server does not use the cache technology.

1. Refer to Gao Yang's answers to similar questions: http://segmentfault.com/q/1010000000095595
2. System Architecture of SegmentFault reconstruction based on the new version written by joyqi

In addition, the no-cache is only the result of accessing dynamic content. All static files are cached on the UPYUN, a leading acceleration cloud service provider in China. The increasing use of cloud services should be the choice of many entrepreneurial teams: saving costs and improving performance

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