With the little detail you've given, it sounds like the 500 are similar enough to be boiler-plated. I'd aim for one cronjob that processes all 500, probably a handful in parallel, probably config-file driven (so you could simply add a new section for the 501st site.)

In reply to Re: Seeking Expert opinion on Schedule jobs for Perl scripts by hbm
in thread Seeking Expert opinion on Schedule jobs for Perl scripts by Anonymous Monk

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