127.0.0.1:6379> hello 3
1# "server" => "redis"
2# "version" => "6.2.1"
3# "proto" => (integer) 3
4# "id" => (integer) 1389
5# "mode" => "standalone"
6# "role" => "master"
7# "modules" => (empty array)
127.0.0.1:6379> client tracking on bcast prefix user: prefix home:
OK
127.0.0.1:6379> set user:100 monkey
OK
127.0.0.1:6379> set key value
1) "invalidate"
2) 1) "user:100"
127.0.0.1:6379> set user:200 cat
OK
127.0.0.1:6379> get key
OK
127.0.0.1:6379> set key new-value
1) "invalidate"
2) 1) "user:200"
127.0.0.1:6379> get key
"value"
127.0.0.1:6379> get key
OK
127.0.0.1:6379> get key
"new-value"
127.0.0.1:6379>