Criteria of judgement whether LiveCache be installed or not.

Hello, all

My project will install SCM 5.1, using DP and PP/DS modules.

I'd like to know the criteria to judge whether LiveCache should be installed or not.

That is,

Should we decide on the basis of data volume to be manipulated in SCM,

or

on the basis of the modules to be used in SCM ?

If we should decide on the modules to be used, should we install the LiveCache in this case?

And we may use only DP module. How about this case ?

Thank you in advance for your help.

Regards,