type hash for tables and rows
namespace:table:id
INCR gianoauth:realm:next_user_id => 1 HSET gianoauth:realm:user:1 id 1 username "scipio" name "Stefano Scipioni" password "hash"
add an INDEX with sets: collections of strings that are unordered and cannot contain duplicates
SADD gianoauth:realm:all-users gianoauth:realms:users:1
use multi exec to surround HSET and SADD
MULTI HSET ... HSET ... SADD ... EXEC
sorted set: like a set a sorted set only allows members without repeats, but also allows you to specify a score
ZADD gianoauth:realms:priceIndex 10.99 scipio
sudo apt install -y redis-server redis-tools