key field
user:1:info name Ronaldo
age 40
Date 201
viewCounter
hget key field
#获取hash key对应的field的value
hset key field value
#设置hash key对应field的value
hdel key field
#删除hash key对应的field的value
hset user:1:info age 23
1
hget user:1:info age
"23"
hset user:info name ronaldo
(integer)1
hgetall user:1:info
1) "age"
2)"23"
3)"name"
4)"ronaldo"
hdel user:1:info age
(integer)
hgetall user:1:info
1)"name"
2)"ronaldo"
**hexists,hlen **
hexits key field
hlen key
hgetall user:1:info
1)"name"
2)"ronaldo"
3)"age"
4)"23"
hexists user:1:info name
1
hlen user:1:info
2
hmget hmset
hmset user:2:info age 30 name kaka