If cache go down, how to bypass Transparent Caching in CSM ?

hi.
I configured transparent caching in CSM.
But cache go down, CSM dropped traffic to web server.
In this case, deed more configuration?
please me know how to bypass in cache go down .
thanks.
============== CSM configuration ==================
module ContentSwitchingModule 3
vlan 10 client
ip address 192.168.112.2 255.255.255.0
route 172.29.0.0 255.255.0.0 gateway 192.168.112.1
vlan 11 server
ip address 192.168.112.2 255.255.255.0
gateway 192.168.112.3
route 172.18.1.10 255.255.255.255 gateway 192.168.112.4
probe CACHE icmp
interval 2
retries 1
failed 2
receive 1
serverfarm CACHE
no nat server
no nat client
real 172.18.1.10
inservice
probe CACHE
serverfarm FORWARD
no nat server
no nat client
predictor forward
policy NOCACHE
client-group 10
serverfarm FORWARD
policy CACHE
serverfarm CACHE
vserver FROMCACHE
virtual 0.0.0.0 0.0.0.0 any
serverfarm FORWARD
persistent rebalance
inservice
vserver REDIRECT
virtual 0.0.0.0 0.0.0.0 tcp www
vlan 10
serverfarm CACHE
persistent rebalance
slb-policy NOCACHE
slb-policy CACHE
inservice
access-list 10 permit 172.29.1.10

under your vserver redirect, instead of configuring 'serverfarm cache' configure 'serverfarm cache backup forward'
If the serverfarm cache goes down, the CSM will use the backup which is a forward.
However, in this case, the response from the server will probably not come back to the CSM, so you should configure the vserver with the command 'unidirectional' as well.
Regards,
Gilles.

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I wrote the document you mentioned and I also wrote the one below.
http://www.cisco.com/en/US/partner/products/hw/modules/ps2706/products_configuration_example09186a00802c1201.shtml
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