Re: [PHP] Individual bulk e-mails - performance question

On Sun, 2008-08-31 at 12:12 +0200, Per Jessen wrote:
Robert Cummings wrote:

That's easily taken care of. Instead of a cron-job, you could have a
script running as a daemon, checking for emails to be sent every
5mins.

That's the same as running a cron every 5 minutes except now you also
need to detect if your daemon dies :) On the plus side though, you
eliminate the overhead of starting up the script every 5 minutes :)

It is not the same as it will prevent multiple scripts running
concurrently in case a batch of emails takes longer that 5 minutes.
Checking if the daemon dies - I guess it's a matter of taste or
paranoia, but I don't think it's necessary when the script is
sufficiently simple:

#!/bin/sh
while true
do
<yourscript>
sleep 300
done

I accomplish the same with cron scripts by using locks with expiry.

Cheers,
Rob.
--
http://www.interjinn.com
Application and Templating Framework for PHP

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