HINCRBY key field increment
相关命令
Available since 2.0.0.
时间复杂度： O(1)
Increments the number stored at field in the hash stored at key by increment. If key does not exist, a new key holding a hash is created. If field does not exist the value is set to 0 before the operation is performed.
The range of values supported by HINCRBY is limited to 64 bit signed integers.
返回值
Integer reply: the value at field after the increment operation.
例子
Since the increment argument is signed, both increment and decrement operations can be performed:
redis> HSET myhash field 5
- (integer) 1
redis> HINCRBY myhash field 1
(integer) 6
redis> HINCRBY myhash field -1
(integer) 5
redis> HINCRBY myhash field -10
(integer) -5
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