（四）Redis——Hash

127.0.0.1:6379> hset person name Tom
(integer) 1
127.0.0.1:6379> hset person age 100
(integer) 1
127.0.0.1:6379> hget person name
"Tom"
127.0.0.1:6379> hgetall person
1) "name"
2) "Tom"
3) "age"
4) "100"
127.0.0.1:6379> hdel person age
(integer) 1
127.0.0.1:6379> hgetall person
1) "name"
2) "Tom"
127.0.0.1:6379> hexists person name
(integer) 1
127.0.0.1:6379> hexists person age
(integer) 0
127.0.0.1:6379> hkeys person
1) "name"
127.0.0.1:6379> hlen person
(integer) 1
127.0.0.1:6379>