浏览器刷新机制的区别

Google Chrome 22.0.1229.94 on Mac OSX 10.8

Press Refresh on Browser / command+R without Browser Cache

Request Headers

GET /css/index.css HTTP/1.1
Host: www.10086.cn
Connection: keep-alive
Cache-Control: max-age=0
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_0) AppleWebKit/537.4 (KHTML, like Gecko) Chrome/22.0.1229.94 Safari/537.4
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding: gzip,deflate,sdch
Accept-Language: zh-CN,zh;q=0.8
Accept-Charset: GBK,utf-8;q=0.7,*;q=0.3
Cookie: __utma=168781502.1727394238.1341837659.1352195145.1352254718.139; __utmb=168781502.1.10.1352254718; __utmc=168781502; __utmz=168781502.1350572196.127.17.utmcsr=api.cleaderwin.com|utmccn=(referral)|utmcmd=referral|utmcct=/android_check/android_get.php

Response Headers

HTTP/1.1 200 OK
Server: nginx/1.0.15
Date: Wed, 07 Nov 2012 02:18:32 GMT
Content-Type: text/css
Last-Modified: Tue, 06 Nov 2012 10:27:44 GMT
Transfer-Encoding: chunked
Connection: keep-alive
Vary: Accept-Encoding
Expires: Mon, 12 Nov 2012 02:18:32 GMT
Cache-Control: max-age=432000
Content-Encoding: gzip

Press Refresh on Browser / command+R with Browser Cache

Request Headers

GET /css/index.css HTTP/1.1
Host: www.10086.cn
Connection: keep-alive
Cache-Control: max-age=0
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_0) AppleWebKit/537.4 (KHTML, like Gecko) Chrome/22.0.1229.94 Safari/537.4
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding: gzip,deflate,sdch
Accept-Language: zh-CN,zh;q=0.8
Accept-Charset: GBK,utf-8;q=0.7,*;q=0.3
Cookie: __utma=168781502.1727394238.1341837659.1352195145.1352254718.139; __utmb=168781502.1.10.1352254718; __utmc=168781502; __utmz=168781502.1350572196.127.17.utmcsr=api.cleaderwin.com|utmccn=(referral)|utmcmd=referral|utmcct=/android_check/android_get.php
If-Modified-Since: Tue, 06 Nov 2012 10:27:44 GMT

Response Headers

HTTP/1.1 304 Not Modified
Server: nginx/1.0.15
Date: Wed, 07 Nov 2012 02:20:23 GMT
Last-Modified: Tue, 06 Nov 2012 10:27:44 GMT
Connection: keep-alive
Expires: Mon, 12 Nov 2012 02:20:23 GMT
Cache-Control: max-age=432000

URL Paste and Go with Cache

Request URL:http://www.10086.cn/css/index.css
Request Method:GET
Status Code:200 OK (from cache)