efw 3.0 proxy cache

[Guest]

[kikilinux]

Hi
It seems the caching proxy doesn't work well.
I take my mozila firefox to cache nothing and i click on 2 or 3 link Repeatedly to see the cache hit and cache miss ratio in dashboard.
but nothing hited and just cache miss increases.
( I know the https can not be cached)
what is the problem?

any help greatly appreciated