squid cache, curl -i return x-cache: miss

webyuhang

[root@nemowap2 root]# curl -I www.abc.cn
HTTP/1.0 200 OK
Date: Mon, 19 May 2008 07:41:03 GMT
Server: Apache
Last-Modified: Fri, 16 May 2008 09:25:56 GMT
ETag: "59014c-1927-99e01100"
Accept-Ranges: bytes
Content-Length: 6439
Vary: Accept-Encoding
Content-Type: text ml; charset=GB2312
Content-Language: GB2312
X-Cache: MISS from www.abc.cn
Via: 1.0 www.abc.cn:80 (squid/2.6.STABLE13)
Connection: close

怎么是MISS,不是hit。
这里也看不到expiress,cache-control

apache vhost 设置
<VirtualHost *:81>
    ServerAdmin admin@abc.cn
    DocumentRoot /opt/
    ServerName www.abc.cn
    ErrorLog logs/abc.cn-error_log
    CustomLog "|/usr/local/sbin/cronolog /var/log/httpd/abc.cn.%Y%m%d" common
    <Directory "/opt/html/tt">
    Options FollowSymLinks
    AllowOverride FileInfo
    </Directory>
   ScriptAlias /cgi-bin/ "/opt/cgi-bin/"
   <Directory "/opt/cgi-bin">
    AllowOverride None
    Options None
    Order allow,deny
    Allow from all
   </Directory>
<Location /server-status>
    SetHandler server-status
    Order deny,allow
    Deny from all
    Allow from all
<IfModule mod_expires.c>
ExpiresActive on
ExpiresByType image/gif "access plus 1 month"
ExpiresByType text/css "now plus 2 day"
ExpiresDefault "now plus 1 day"
</IfModule>
</Location>

squid 和 apache  在同一台服务器上

[ 本帖最后由 webyuhang 于 2008-5-19 15:23 编辑 ]

webyuhang

oot@abc ~]# wget -S --spider www.abc.cn
--15:43:04--  http://www.abc.cn/
           => `index.html'
正在解析主机 www.abc.cn... 210.82.11.11
Connecting to www.abc.cn|210.82.11.11|:80... 已连接。
已发出 HTTP 请求，正在等待回应...
  HTTP/1.0 200 OK
  Date: Mon, 19 May 2008 07:42:37 GMT
  Server: Apache/2.0.52 (CentOS)
  Last-Modified: Tue, 11 Dec 2007 05:19:28 GMT
  ETag: "e-f8-db5b3800"
  Accept-Ranges: bytes
  Content-Length: 248
  Content-Type: text/html; charset=UTF-8
  X-Pad: avoid browser bug
  Age: 27
  X-Cache: HIT from www.runabc.cn
  Via: 1.0 www.runabc.cn:80 (squid/2.6.STABLE17)
  Connection: keep-alive
长度：248 [text/html]
200 OK

这个请求时显示的HIT，
curl --help|grep I
-I/--head          Show document info only
这个仅仅是显示http head ,
wget真正请求的时候，确实是HIT了。是不是这个原因呢

webyuhang

[root@abc ~]# wget -S --spider www.sohu.com
--15:47:51--  http://www.sohu.com/
           => `index.html'
正在解析主机 www.sohu.com... 61.135.179.166, 61.135.179.184, 61.135.179.190, ...
Connecting to www.sohu.com|61.135.179.166|:80... 已连接。
已发出 HTTP 请求，正在等待回应...
  HTTP/1.0 200 OK
  Date: Mon, 19 May 2008 07:44:25 GMT
  Server: Apache/1.3.37 (Unix) mod_gzip/1.3.26.1a
  Vary: Accept-Encoding,X-Up-Calling-Line-id,X-Source-ID,X-Up-Bearer-Type,x-huawei-nasip,x-wap-profile
  Cache-Control: max-age=70
  Expires: Mon, 19 May 2008 07:45:35 GMT
  Last-Modified: Mon, 19 May 2008 07:44:06 GMT
  Content-Type: text/html
  Age: 63
  Content-Length: 190729
  X-Cache: HIT from 20430583.31309620.29323933.sohu.com
  Via: 1.0 20430583.31309620.29323933.sohu.com:80 (squid/2.6.STABLE12)
  Connection: close
长度：190,729 (186K) [text/html]
200 OK

[root@abc ~]# curl -I www.sohu.com
HTTP/1.0 200 OK
Date: Mon, 19 May 2008 07:45:12 GMT
Server: Apache/1.3.37 (Unix) mod_gzip/1.3.26.1a
Vary: Accept-Encoding,X-Up-Calling-Line-id,X-Source-ID,X-Up-Bearer-Type,x-huawei-nasip,x-wap-profile
Cache-Control: max-age=70
Expires: Mon, 19 May 2008 07:46:22 GMT
Last-Modified: Mon, 19 May 2008 07:44:06 GMT
Content-Type: text/html
Age: 25
Content-Length: 190729
X-Cache: HIT from 14665659.19777528.23561209.sohu.com
Via: 1.0 14665659.19777528.23561209.sohu.com:80 (squid)
Connection: clos

可是sohu curl wget都是显示了hit。为什么呢？

badb0y

用curl的话,,要执行两次之后才被hit的,,和WGET 不一样!

webyuhang

原帖由 badb0y 于 2008-5-19 16:22 发表
用curl的话,,要执行两次之后才被hit的,,和WGET 不一样!

无论执行几次，都是MISS

webyuhang

squid的命中率显示：

Cache information for squid:
        Request Hit Ratios:     5min: 100.0%, 60min: 34.7%
        Byte Hit Ratios:        5min: 97.5%, 60min: -6.4%
        Request Memory Hit Ratios:      5min: 20.0%, 60min: 3.0%
        Request Disk Hit Ratios:        5min: 77.0%, 60min: 22.7%
        Storage Swap size:      19820 KB
        Storage Mem size:       360 KB
        Mean Object Size:       140.57 KB
        Requests given to unlinkd:      5

badb0y

那可能你的SQUID配置有问题吧!