How to disable cache

[yu267155364]

I am working on deploying VCL code. And I know virtual machine caching 
mechnism, which will boot VM before user making reservation, is useful. 
However, I want to disable the VM caching mechnism so I can develop some 
specific provisioning module. Is there any way can disable the caching 
mechnism in the VCL code?

Thanks,
Xianqing