HINCRBY _key_ _field_ _value_ (Redis >

1.3.10)= Time complexity: O(1)

Increment the number stored at field in the hash at key by value. If key does not exist, a new key holding a hash is created. If field does not exist or holds a string, the value is set to 0 before applying the operation.

The range of values supported by HINCRBY is limited to 64 bit signed integers.

Examples

Since the value argument is signed you can use this command to perform both increments and decrements:

HINCRBY key field 1 (increment by one)
HINCRBY key field -1 (decrement by one, just like the DECR command)
HINCRBY key field -10 (decrement by 10)

Return value

Integer reply The new value at field after the increment operation.