HSETNX
Syntax
HSETNX key field value
- Available since:
- 2.0.0
- Time complexity:
- O(1)
- ACL categories:
-
@write
,@hash
,@fast
,
Sets field
in the hash stored at key
to value
, only if field
does not
yet exist.
If key
does not exist, a new key holding a hash is created.
If field
already exists, this operation has no effect.
Examples
RESP2/RESP3 Reply
One of the following:
- Integer reply:
0
if the field already exists in the hash and no operation was performed. - Integer reply:
1
if the field is a new field in the hash and the value was set.