Embedded is a very huge field. That can be everything from aviation, military and medial up to some toys.

For some of those using something as Redis as the existing service might be interesting, for others it will be a no-go.

I worked on automative infotainment system in the past, and throwing Redis on an embedded Linux system there would have been fine if it would have fulfilled a particular task in a good fashion. I think I even proposed it once for something.