网站设置缓存的问题

【直接在html添加meta参数即可】

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">  

  修改html的时间：

  -rw-r--r-- 1 root root 1157 7月  20 15:59 user_reg.html  ---  7月20日 15:59 

   浏览器查看到的时间

1. 
   
2. 【Response header】
3. 
   
4. Accept-Ranges:
   bytes
5. Connection:
   Keep-Alive
6. Content-Length:
   1157 ----- 文件大小
7. Content-Type:
   text/html
8. Date:
   Thu, 20 Jul 2017 12:52:11 GMT --- 这个是当前获取html的时间，也是GMT时间
9. ETag:
   "485-554bb214f0e80"
10. Keep-Alive:
    timeout=5, max=100
11. Last-Modified:
    Thu, 20 Jul 2017 07:59:38 GMT —— 显示GMT（格林威治时间），跟北京时间相差8小时
12. Server:
    Apache/2.4.25 (Unix) OpenSSL/1.0.1e-fips PHP/5.6.6

       【Request header】

1. Accept:
   text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
2. Accept-Encoding:
   gzip, deflate
3. Accept-Language:
   zh-CN,zh;q=0.8
4. Cache-Control:
   max-age=0
5. Connection:
   keep-alive
6. Host:
   139.199.153.200
7. If-Modified-Since:
   Tue, 18 Jul 2017 07:51:20 GMT
8. If-None-Match:
   "da0-55492c7f16e00"
9. Referer:
   http://139.199.153.200/clients/shop_yaqi/html/transition.html?name=UkMwDPyJkJb0ASkM5VF7q9Dp90
10. Upgrade-Insecure-Requests:
    1
11. User-Agent:
    Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/