incr key [num]

Since 1.7.0.1, *incr methods return error if value cannot be converted to integer.

Increment the number stored at key by num. The num argument could be a negative integer. The old number is first converted to an integer before increment, assuming it was stored as literal integer.

Parameters

• key -
• num - Optional, must be a signed integer, default is 1

Return Value

The new value. If the old value cannot be converted to an integer, returns error Status Code.

Example

ssdb 127.0.0.1:8888> set a a
ok
(0.000 sec)
ssdb 127.0.0.1:8888> incr a
error: value is not an integer or out of range
(0.000 sec)
ssdb 127.0.0.1:8888> del a
ok
(0.000 sec)
ssdb 127.0.0.1:8888> incr a
1
(0.000 sec)
ssdb 127.0.0.1:8888> incr a 10
11
(0.000 sec)
ssdb 127.0.0.1:8888>