Memcached set command
Memcached set Command is used to use the value (data value) is stored in the specified key (key).
If set Of key Already exists, this command can update the key The corresponding original data, that is, to achieve the role of update.
Syntax:
set The basic syntax format of the command is as follows:
set key flags exptime bytes [noreply]
value
The parameters are described as follows:
keyKey valuekey-valueIn the structurekeyUsed to find cached valuesflagsCan include integer parameters for key-value pairs, which clients use to store additional information about key-value pairsexptimeLength of time to save key-value pairs in the cache (in seconds, 0 means forever)bytesNumber of bytes stored in the cachenoreply(optional): this parameter tells the server that there is no need to return datavalueThe stored value (always in the second line) (which can be directly understood askey-valueIn the structurevalue)
Example
In the following example, we set:
Key → runoob
Flag → 0
Exptime → 900 (in seconds)
Bytes → 9 (bytes of data storage)
Value → memcached
set runoob 0 900 9
memcached
STORED
get runoob
VALUE runoob 0 9
memcached
END
Output
If the data setting is successful, the output:
STORED
Output information description:
STOREDOutput after being saved successfullyERROROutput after a failed save