Increment the specified
field of an hash stored at
key, and representing a
floating point number, by the specified
If the field does not exist, it is set to
0 before performing the operation.
An error is returned if one of the following conditions occur:
- The field contains a value of the wrong type (not a string).
- The current field content or the specified increment are not parsable as a double precision floating point number.
Bulk string reply: the value of
field after the increment.
(integer) 1redis> HINCRBYFLOAT mykey field 0.1
"10.6"redis> HSET mykey field 5.0e3
(integer) 0redis> HINCRBYFLOAT mykey field 2.0e2
The command is always propagated in the replication link and the Append Only File as a HSET operation, so that differences in the underlying floating point math implementation will not be sources of inconsistency.