我正在使用Squid v2.7。
我在日志中获取了很多TCP_MISS消息，而且TCP_HIT很less。
这是什么意思？
ps这里是一个日志的例子：
1369840631.853 59 127.0.0.1 TCP_MISS/200 49714 GET http://pagead2.googlesyndication.com/pagead/imgad? - DIRECT/173.194.41.77 application/x-shockwave-flash 1369840631.883 141 127.0.0.1 TCP_MISS/302 1254 GET http://altfarm.mediaplex.com/ad/js/18329-129461-2056-10? - DIRECT/89.207.18.182 - 1369840631.964 163 127.0.0.1 TCP_MISS/200 7939 CONNECT urs.microsoft.com:443 - DIRECT/157.55.231.253 - 1369840631.971 160 127.0.0.1 TCP_MISS/200 7971 CONNECT urs.microsoft.com:443 - DIRECT/157.55.231.253 - 1369840632.093 205 127.0.0.1 TCP_MISS/200 8803 GET http://img.mediaplex.com/content/0/18329/1510_FREE_CrystalClear_Fruitmachine_DCF_300x250_1cc304.js? - DIRECT/89.207.18.181 text/javascript 1369840632.317 193 127.0.0.1 TCP_MISS/200 56608 GET http://img-cdn.mediaplex.com/0/18329/1510_FREE_CrystalClear_Fruitmachine_DCF_300x250_1cc304.swf - DIRECT/46.33.70.42 application/x-shockwave-flash 1369840813.425 287250 127.0.0.1 TCP_MISS/200 12260 CONNECT plus.google.com:443 - DIRECT/173.194.34.70 - 1369840824.390 293221 127.0.0.1 TCP_MISS/200 5204 CONNECT csi.gstatic.com:443 - DIRECT/74.125.226.111 - 1369837426.298 0 127.0.0.1 TCP_MEM_HIT/200 2565 GET http://0.gravatar.com/avatar/0d5183de3952f6c8645c5e6140938ef7? - NONE/- image/png 1369837426.299 1 127.0.0.1 TCP_MEM_HIT/200 1917 GET http://0.gravatar.com/avatar/cbbed29064ada5c3686c4d980e545e67? - NONE/- image/jpeg 1369837426.299 0 127.0.0.1 TCP_MEM_HIT/200 2190 GET http://1.gravatar.com/avatar/9986282128def4361d1971b8bbe3d0d2? - NONE/- image/png 您显示的错过了caching的所有请求可分为两类：