How to set location for .dat files

I have just updated to Apple Mac Studio.   Now when I import images to my Adobe Lightroom cache .dat files are saving to the folder I am working on.  I never use to see these files and now I see they are created every time I access a file.  Can I stop this from happening?  If not, how can I change things so these files are saved somewhere else.   Where is the best place to save these files. Is it ok to delete these files?  

Thank you.