Level 53
redis is not a database , it's a key value store.
So you can get the data that is in key 'user_1_profile' but you cannot get data from it like you suggest select * from 'redis' WHERE key LIKE 'user%' or any other query type.
It's just to put data in and get it again, but by key, like you have a big in memory array for caching your data.