On 10/11/06, Karjala <[EMAIL PROTECTED]> wrote:
I run a script called createrss.pl as a cron job every hour which checks if there are any new stories and if so creates a new feed.rss file I think this method takes up a lot of RAM and CPU power since it launches Perl every hour, but I can't think of anything better.
A moderately-powerful machine should be capable of tens of thousands of launches per hour; one more won't be noticeable. Of course, if your program takes more than 58 minutes to run, maybe there's room for improvement. :-)
The other way I thought of (and rejected) was to have the web script that accepts a new story from the administrator, to also create the RSS file. But I rejected this because if two people might submit a story at the same time then the resulting RSS file might only contain one of them.
That sounds like a job for flock(). By locking the file, your process "installs a traffic light", so to speak. If everybody uses flock() properly, each process will wait for a green light before editing the file. Hope this helps! --Tom Phoenix Stonehenge Perl Training -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] <http://learn.perl.org/> <http://learn.perl.org/first-response>
