Are Backendless Cache keys unique?

I would like to know if Backendless Cache keys are unique and can not be duplicated by any means.
I consider some scenario where at some point in time, an app/client try to duplicate/save to cache with a key similar to other objects within the cache.

Hello, @KamiMart_KamiMart.

Backendless Cache keys are unique.

Regards, Nikita !