SSD cache like bcache

Has somebody experience with some SSD caching? I have NAS (1x HDD, 1x mSATA SSD) and I would like to use part of SSD as a cache. Is it possible using something as bcache? I didn’t find any article or help with this. Can I compile bcache and how?

Sure looks like a fancy way to en ends....

What is the the intended function for such a setup?

I can see the theory works .... practicably tho'.....

What is the underlying disk bus and host architecture? Available memory?

Yes, it often requires quite a bit of memory (> 2 GB) and high-speed busses to the drives, neither of which does a typical all-in-one router have.