1.9. Memcached prepend command

1.9.1. Syntax: ¶

The


      prepend

basic syntax format of the command is as follows:

prepend key flags exptime bytes [noreply]
value

The parameters are described as follows:

key :Key value key-value in the structure key used to find cached values

flags :Can include integer parameters for key-value pairs, which clients use to store additional information about key-value pairs

exptime :Length of time to save key-value pairs in the cache (in seconds,0 means forever)

bytes :Number of bytes stored in the cache

noreply (optional): this parameter tells the server that there is no need to return data

value :The stored value (always in the second line) (which can be directly understood as key-value in the structure value )

1.9.2. Example ¶

Examples are as follows:

First we store a key in Memcached runoob whose value is memcached .

Then, we use the get command to retrieve the value.

Then, we use the prepend command before the key is runoob append “redis” to the value.

Finally, we will use the get command to retrieve the value.

set runoob 0 900 9
memcached
STORED
get runoob
VALUE runoob 0 9
memcached
END
prepend runoob 0 900 5
redis
STORED
get runoob
VALUE runoob 0 14
redismemcached
END

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