Re: Event Handling

On Mon, Mar 15, 2010 at 05:38:04PM -0000, Alex Major wrote: > Thanks to all for your help on this, it's been very interesting for me to > read. > > The system needs to check arrivals in real time (give or take a second or > two), using a cron job every minute doesn't provide the real time checking I > would like. > > However, when I then got to thinking about it, wouldn't this be an ideal > solution? I create a PHP script that loops for 60 seconds, checking the > database each second for new entries and processing them (meaning I get near > real time monitoring), and then have that PHP script called by a cron job > every minute. > > The reason I think that could be a good solution for me, is that if the PHP > script crashed (for any reason), then at most it's 59 seconds before the > system kicks in again and begins processing all the queued arrivals. If I > coded a PHP script to loop infinitely processing things every second, it's > possible I wouldn't notice a crash for a considerable amount of time. The > proposed solution provides a good fail-safe, I think. > > Does that solution seem sensible? Or overkill? > > Thanks again for your help in this, it's quite novel for me. I would think that the PHP CLI extension would need to be installed on the server for this to work. I don't know that that's common. (I could be completely wrong.) I would recommend coding this in C, because it would use far less resources. Paul -- Paul M. Foster