http 缓存策略

09 December 2015

##目录

web缓存类型
缓存相关的header
参考

##web缓存的类型

##缓存相关的header

####response header

cache-control
expires
etag ####request header
if-modified-since
if-none-match

####例子

如下一个304请求的相关header

Request Headers

Accept:image/webp,image/*,*/*;q=0.8
Accept-Encoding:gzip, deflate, sdch
Accept-Language:zh-CN,zh;q=0.8,en;q=0.6,ja;q=0.4
Cache-Control:max-age=0
Connection:keep-alive
Host:www.cnblogs.com
If-Modified-Since:Sun, 03 Feb 2013 07:04:18 GMT
If-None-Match:"2a497afdc1ce1:0"
Referer:http://www.cnblogs.com/skylar/p/browser-http-caching.html
User-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.73 Safari/537.36

Response Headers

Cache-Control:max-age=86400
Connection:keep-alive
Date:Wed, 09 Dec 2015 07:43:34 GMT
Etag:"2a497afdc1ce1:0"

##参考

透过浏览器看HTTP缓存

HTTP缓存