HINCRBY key field increment
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.
Integer reply: the value at field after the increment operation.
Since the increment argument is signed, both increment and decrement operations can be performed:
(integer) 1 redis> HINCRBY myhash field 1 (integer) 6 redis> HINCRBY myhash field -1 (integer) 5 redis> HINCRBY myhash field -10 (integer) -5
© 2009–2020 Salvatore Sanfilippo
Licensed under the Creative Commons Attribution-ShareAlike License 4.0.
https://redis.io/commands/hincrby