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我的 application.js 文件名看起来像application-b600352536291bc180983d43e6a2407f.js. 所以它的名字中有 md5 缓存破坏器。我已将静态资产的 max-age 选项设置为 1 hour config.static_cache_control = "public, max-age=3600"。但我观察到浏览器不尊重max-age标头，并且总是从服务器重新验证并为304 Not Modified. 我怎样才能节省往返行程？

请求标头

Request URL:https://blah.com/assets/application-b600352536291bc180983d43e6a2407f.js  
Request Method:GET  
Status Code:304 Not Modified  
Request Headersview source  
Accept:*/*  
Accept-Charset:ISO-8859-1,utf-8;q=0.7,*;q=0.3  
Accept-Encoding:gzip,deflate,sdch  
Accept-Language:en-US,en;q=0.8  
Cache-Control:max-age=0  
Connection:keep-alive  
If-Modified-Since:Sun, 12 Feb 2012 07:36:16 GMT

响应标头

Cache-Control:public, max-age=3600
Connection:keep-alive
Date:Sun, 12 Feb 2012 18:27:48 GMT
Last-Modified:Sun, 12 Feb 2012 07:36:16 GMT
Server:nginx
Vary:Accept-Encoding
Via:1.1 varnish
X-Varnish:499878183
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1 回答 1

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Are you pressing Command + R or Ctrl + R? The browser refresh button intentionally re-checks the freshness of its assets. It assumes you're hitting refresh because something didn't function properly on the page.

If you want to test the headers, visit the page once and then focus the location bar and press Enter to visit it a second time. The assets should come from the cache.

于 2012-10-17T05:44:55.423 回答