Because the company has dedicated proxy server that control user internet behavior, so that it does not need user cache Internet files, and disable cache can also reduce virus.

There is no such a policy in active directory by default, so that we need write one.
then add it to template in User Configuration -> Administrative Templates, right click then add the IE_Cache_Setting.adm that we created as below.

now you can modify IE cache settings in User Configuration > Administrative Templates > Windows Components > Internet Explorer > Cache .

there are several group policies that i think a Active directory must have. which are what we can't live without in my IT department.

1. default domain policy
every active directory domain has it because it was there after you install a domain server, do not change most of them, we only use it to change the user account setting such as password policy, lockout duration.

2. automatic install default software for client computers
Group policy
this gpo installs software for you, zip tools, office ware, or industrial software.