HI,all, Since Caching hierarchy have the ability to improve cache hit, I want to config cache hierarchy for my more than 200 squids.But I am not familiar with this tech, which method will be suited for me (netdb,ICP,Cache Digest,HTCP,CARP)? I prefer to use CARP, and how about it? tks more. I have sent this message half-hour ago,but can't see it.So I send it again. -- Jeff Pan jeffpan@xxxxxxxxxxx -- http://www.fastmail.fm - Or how I learned to stop worrying and love email again