Parallel::Scoreboard is a pure-perl implementation of a process
scoreboard. By using the module it is easy to create a monitor for many
worker process, like the status module of the Apache HTTP server.
Unlike other similar modules, Parallel::Scoreboard is easy to use and has
no limitation on the format or the length of the statuses to be stored.
Any arbitrary data (like JSON or frozen perl object) can be saved by the
worker processes as their status and read from the manager process.