You can access and control your memcached installation, using simple telnet commands. Use ps -ef to determine on which port and ip you memcached server is running and connect to it:

telnet localhost 11211

The list of commands is as follows:

Get stored data

get <key>*

Returns the value stored for this key. You can specify more than one keys separated by spaces.

Store data

[set|add|replace|append|prepend] <key> <flags>
<exp_time> <bytes> [no_reply]

The arguments are:

• flags: an arbitrary 16-bit unsigned integer (written out in decimal) that the server stores along with the data and sends back when the item is retrieved.
• exp_time: expiration time in seconds. If it’s 0, the item never expires (although it may be deleted from the cache to make place for other items).
• bytes: the number of bytes in the data block to follow, *not* including the delimiting \r\n. <bytes> may be zero (in which case it’s followed by an empty data block).

After the command hit Enter and input the data block of size <bytes>.

Return values:

• STORED
• NOT_STORED

Delete data

delete <key> [<time>] [noreply]

Delete a key.

• time: the amount of time in seconds (or Unix time until which) the client wishes the server to refuse “add” and “replace” commands with this key.

Flush all stored data

flush_all

Flashes the entire cache.

Other commands

stats

General statistics

stats slabs

Memory statistics

stats memory

Memory statistics

stats items

Higher level statistics

quit

Quit the telnet interface

Tags: command line, flush, memcached, telnet

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