Redis Incrbyfloat Command

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Redis Incrbyfloat Command

Redis Strings

The Redis Incrbyfloat command increments the value of key by the specified floating point number increment.

If key does not exist, it is set to 0 before performing the operation.

Syntax

The basic syntax of redis Incrbyfloat command is as follows:

redis 127.0.0.1:6379> INCRBYFLOAT KEY_NAME INCR_AMOUNT

Available Versions

>= 2.6.0

Return Value

The value of key after the command is executed.

Example

# Neither value nor increment are in scientific notation
redis> SET mykey 10.50
OK
redis> INCRBYFLOAT mykey 0.1
"10.6"

# Both value and increment are in scientific notation
redis> SET mykey 314e-2
OK
redis> GET mykey
# The value set by SET can be in scientific notation
"314e-2"
redis> INCRBYFLOAT mykey 0
# But after executing INCRBYFLOAT, the format will be changed to non-scientific notation
"3.14"

# Can be performed on integer types
redis> SET mykey 3
OK
redis> INCRBYFLOAT mykey 1.1
"4.1"

# Trailing 0s are removed
redis> SET mykey 3.0
OK
redis> GET mykey
# The decimal part of the value set by SET can be 0
"3.0"
redis> INCRBYFLOAT mykey 1.000000000000000000000
# But INCRBYFLOAT will ignore unnecessary 0s, converting floats to integers if necessary
"4"
redis> GET mykey
"4"

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