Remmanded settings for Cache life and Cache orphaning thresh

Hello,

We have a bit less than 3000 devices managed with ZCM.

Version is 11.2.3a and Agent version are 11.2.2 and 11.2.3a (Update in progress).

My question is what cache settings are recommanded knowing that the network has enough bandwith?
What are your experiences?

Thanks in advance for advices.