October 24, 2014

A quick way to get memcached status

There are all sorts of different interfaces to memcached, but you don’t need any of them to make requests from the command line, because its protocol is so simple. Try this, assuming it’s running on the usual port on the local machine:

Here’s an easy “top” emulator for memcached:

If you don’t have netcat (nc), you can also use Bash’s built-in /proc/tcp magic if it’s enabled. Anything that can push a couple of characters to a TCP port and print the result to stdout will work. Or you can use something like this, if you must do it via PHP:

About Baron Schwartz

Baron is the lead author of High Performance MySQL.
He is a former Percona employee.

Comments

  1. Dieter_be says:

    You can do even more fun/specific stuff like ‘stats items’, ‘stats sizes’, ‘stats slabs’, …
    See http://code.sixapart.com/svn/memcached/trunk/server/doc/protocol.txt

    Another client worth mentioning is telnet. The advantage over netcat is the interactivity. (but then again nc is good for scripting)

  2. gorenje says:

    watch “(echo stats ; echo quit ) | nc 127.0.0.1 11211″ works, echo stats doesn’t since memcache expects you to quit the connection.

  3. Steve Batcup says:

    This helped me a great deal, thank you.

  4. Emptywalls says:

    Thanks! Exactly what I needed.

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