App::derived - run command periodically and calculate rate and check from network
$ cat CmdsFile slowqueries: mysql -NB -e 'show global status like "Slow_queries%"' $ derived -p port CmdsFile $ telnet localhost port get slowqueris VALUE slowqueris 0 3 0.2 # slow queries/sec
derived runs commands periodically and capture integer value. And calculate per-second rate. You can retrieve these values from integrated memcached-protocol server
You can monitoring the variation of metrics through this daemon.
See detail for perldoc "derived"
Masahiro Nagano <firstname.lastname@example.org>
Copyright (C) Masahiro Nagano