Redis hash structure command

hold key Medium field The value of the field is set to value	hset key field value
see key Medium hash data	hgetall key
Set multiple domains in key in	hmset key field1 value1 field2 value2.....
Query one of the fields	hget key field
Query multiple fields	hmget key field1 field2
Delete a domain	hdel key field
Statistics key There are several fields in	hlen key
Judge key Medium field Whether the value of the field exists	hexists key field
hold key Medium field The value of the field increases by the integer value   value	hincrby key field value
hold key Medium field The value of the field increases by floating point value   value	hincrbyfloat key field value
return key All in field	hkeys key
return key All in value	hvals key