Best practice for variables shared between processes?

David Cantrell david at
Tue Sep 21 13:20:08 BST 2010

On Mon, Sep 20, 2010 at 05:43:20PM +0100, Peter Edwards wrote:
> On 20 September 2010 17:30, Roger Burton West <roger at> wrote:
> > I wish to have two processes, a "producer" (which will create files) and
> > a "consumer" (which will do something with them), running
> > simultaneously. Ideally the producer would push filenames to a list as
> > it finishes producing them, while the consumer would shift them off the
> > same list (or loop-wait, if the list is empty).
> > What is the accepted best practice for achieving this effect in modern
> > idiomatic Perl?
> Use a queue?
> or for larger scale
> ApacheMQ | RabbitMQ | Beanstalkd

My first choice would be to just use the filesystem.  Have the
producer(s) write its files somewhere and then mv them to a directory
that the consumer knows about once it's completely written.

The consumer would then process files in m-time order.

David Cantrell | Hero of the Information Age

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