Yes, probably with superior performance. The clustering model seems to differ, but as far as I can tell, the 'distributed' part of this project isn't really implemented.
Depending on the use case. If this is being used to reduce load on your database, then there are no noticeable differences between performance of GhostDB or redis from the clients end.
Same question. How is this different from Redis?
Not too different from Redis at the moment, however this is straight out of a university project were we had a tight deadline and had to limit scope considerably but if you check the roadmap on the repo we want to add a lot to it.