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I am looking to make a script that runs and uses the time stamp of the last time it ran as a parameter to retrieve results that have been updated since that time. We were thinking of creating a database table and having it update that and then retrieve the date from there, but I was looking for any other approach that someone might suggest.
Using a database table to store the last run time is probably the easiest approach, especially if you already have that infrastructure in place. A nice thing about this method is that you can write the run time right before the script terminates, in case it runs for a long time and you do not want it to start up again too soon.
Alternatively you could either write a timestamp to file (which has it’s own set of issues) or attempt to fish it out of a log file (for example, the web access log if the script is being run that way) but both of those seem harder.