HINCRBY key field increment
Time complexity: O(1)
Increments the number stored at
field in the hash stored at
key does not exist, a new key holding a hash is created.
field does not exist the value is set to
0 before the operation is
The range of values supported by
HINCRBY is limited to 64 bit signed integers.
Integer reply: the value at
field after the increment operation.
increment argument is signed, both increment and decrement
operations can be performed:
dragonfly> HSET myhash field 5
dragonfly> HINCRBY myhash field 1
dragonfly> HINCRBY myhash field -1
dragonfly> HINCRBY myhash field -10