sailer_sh 发表于 2009-06-18 10:05

不太明白TCP_IMS_HIT的意思

squid的access.log里的TCP_IMS_HIT,对它的解释是：客户端发送确认请求，Squid发现更近来的、貌似新鲜的请求资源的拷贝。Squid发送更新的内容到客户端，而不联系原始服务器。

这个是不是说squid刚刚从后台web服务器更新了这个文件，更新完第一次有客户端请求这个文件，squid就把缓存发给它，以后再有客户端要访问这个文件的话，就是TCP_MEM_HIT了？
以下是我截取一段access.log的内容，为什么TCP_IMS_HIT会频繁的与TCP_MEM_HIT交替出现？

1245289965.300      0 60.176.2.30 TCP_IMS_HIT/304 239 GET http://www.abc.com/index.html - NONE/- text/html
1245289988.478      0 125.92.211.94 TCP_MEM_HIT/200 7262 GET http://www.abc.com/index.html - NONE/- text/html
1245290068.470      0 61.180.24.83 TCP_MEM_HIT/200 7262 GET http://www.abc.com/index.html - NONE/- text/html
1245290118.772      0 221.209.245.31 TCP_IMS_HIT/304 239 GET http://www.abc.com/index.html - NONE/- text/html
1245290146.033      0 222.182.173.211 TCP_IMS_HIT/304 239 GET http://www.abc.com/index.html - NONE/- text/html
1245290146.588      0 58.251.166.115 TCP_MEM_HIT/200 7257 GET http://www.abc.com/index.html - NONE/- text/html
1245290197.134      0 124.166.105.255 TCP_IMS_HIT/304 239 GET http://www.abc.com/index.html - NONE/- text/html
1245290334.068   9735 59.46.80.245 TCP_MEM_HIT/200 44648 GET http://www.abc.com/index.html - NONE/- text/html
1245290340.327      0 221.12.17.84 TCP_MEM_HIT/200 7262 GET http://www.abc.com/index.html - NONE/- text/html
1245290353.890      0 221.202.72.17 TCP_MEM_HIT/200 7262 GET http://www.abc.com/index.html - NONE/- text/html
1245290457.480      0 60.180.200.31 TCP_MEM_HIT/200 7262 GET http://www.abc.com/index.html - NONE/- text/html
1245290577.898      0 218.246.181.195 TCP_MEM_HIT/200 7262 GET http://www.abc.com/index.html - NONE/- text/html
1245290579.449      0 222.74.58.30 TCP_MEM_HIT/200 7262 GET http://www.abc.com/index.html - NONE/- text/html
1245290748.715      0 119.115.44.66 TCP_IMS_HIT/304 239 GET http://www.abc.com/index.html - NONE/- text/html
1245290793.349      0 60.191.56.90 TCP_MEM_HIT/200 7262 GET http://www.abc.com/index.html - NONE/- text/html
1245290802.037      0 119.125.255.21 TCP_MEM_HIT/200 7262 GET http://www.abc.com/index.html - NONE/- text/html


[ 本帖最后由 sailer_sh 于 2009-6-18 10:08 编辑 ]

quki_moom 发表于 2016-12-02 17:54

TCP_IMS_HIT 请求时对IF-Modified-Since这种校验请求记录的日志，返回的状态码都是304.
TCP_MEM_HIT对应的不是校验请求，返回码是200.

交替出现就是因为客户端client请求中有的带了IMS头有的没带。挖坟 :-L
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