FirebaseDB vs CloudDB - wich differences?

Exactly which differences between FirebaseDB and CloudDB ?
Is possible to use Redis server on local networked pc ?

Firebase

http://ai2.appinventor.mit.edu/reference/components/experimental.html#FirebaseDB

Redis

http://ai2.appinventor.mit.edu/reference/components/storage.html#CloudDB

Local / Network Redis Server (with/without SSL)

https://groups.google.com/forum/#!searchin/mitappinventortest/subject$3AHOWTO$3A$20AND$20authorname$3ATimAi2|sort:date/mitappinventortest/GPtZN2viC3E/Cna0GhAeEgAJ