Memcached: Prepend data

‘prepend command is used to prepend new data to the existing data associated with given key.

Syntax

prepend key flags exptime bytes [noreply] value

Following table summarizes the arguments of append command.

Argument	Description
key	Name of the key.
flags	It is 32-bit unsigned integer, stored along with the data in the server and retrieved when you get the <key value> pair.
exptime	Expiry time of the data stored in cache. It is represented in seconds.
bytes	length of the data in bytes that needs to be stored in Memcached.
noreply	It is optional, when you pass this parameter, server don’t send any reply back to you.
value	Value to be appended in Memcached server.

Open new terminal and use telnet to connect to memcached server.

telnet <hostname> <port>

By default memcached server listen on port 11211.

$ telnet 127.0.0.1 11211
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
set 1 0 900 8
Tutorial
STORED
get 1
VALUE 1 0 8
Tutorial
END
prepend 1 0 900 5
Java 
STORED
get 1
VALUE 1 0 13
Java Tutorial
END

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