in reply to Minion as a job scheduler?
One thing to keep in mind about Minion is that the implementation is officially private, meaning that the only API they are maintaining is the perl front-end. You cannot officially add tasks to the queue with database triggers, for example, without risk of things breaking after an upgrade.
It would be nice if someone published a task scheduler and worker pool that was defined in a more language-neutral manner, with public schema.
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Seekers of Perl Wisdom