URL Hashing + Sticky, not optimal.

Gurus,
Had just deployed an ACE for my customer for the caching servers.
We used URL hash and Sticky , after some monitoring we find that 1 server gets 15K connections, another one gets only 5K.
Now its to be understood that due to the erratic internet behavior of users the URLs cached are getting accessed in this disproportionate way.
Now, for cache servers the URL hash is the best predictor, can we try anything else or its going to be as it is.
Have advised for "application request/response predictor" for in case the servers get loaded beyond a point.
let me know your views.
Cheers
Shukla.

Gilles,
Appreciate your reply, had advised the client the first time, still will havent tried ..
couple of things :
1. If i do max-conn with URL hashing, if user-A is going for url-A which is in cache-A and ACE has reached its max-conn value, will it for the same URL direct is towards cache-B with a new entry of url-A (which will in turn start making multi servers cache the same URL bcos of max conns) ??
2. the second hash method we proposed was for "applic request/response" , im not sure how this predictor will work or be beneficial against URL hash.
and im hunting for a doc which explain these predictors in depth ... not just the definitions. As such insights give u an edge when u don't have a test bed for yourself.
awaiting optimistically.
Cheers
Shukla.

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