Yes. And Redis provides an interesting model with very specific performance characteristics depending on how you choose to store your data in each case. If you haven't worked with Redis it might be hard to appreciate how it's a bit more than just a key-value store and how it's a different tool from a relational db.
Lot of people use relational databases as a big key value store, when really they should use a key value store. It's not necessarily about scalability or performance. =)