YouTipRedis Hincrby Command | SimplestTutorials.com
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Redis Hincrby Command
The HINCRBY command in Redis is used to increment the value of a field in a hash table by a specified amount.
The increment can also be negative, which effectively performs a subtraction operation on the specified field.
If the hash table key does not exist, a new hash table will be created and the HINCRBY command will be executed.
If the specified field does not exist, its value is initialized to 0 before executing the command.
Executing HINCRBY on a field that stores a string value will result in an error.
The value of this operation is restricted to a 64-bit signed integer.
Syntax
The basic syntax for the Redis HINCRBY command is as follows:
redis 127.0.0.1:6379> HINCRBY KEY_NAME FIELD_NAME INCR_BY_NUMBER
Available Version
>= 2.0.0
Returns
The updated value of the field in the hash table after executing the HINCRBY command.
Examples
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 redis>