I had a similar scenario recently
the way I tackled the problem was to set a "cron" to trigger a cli script every minute
the script first checked a database to see if there was any jobs queued then processed in the background
works a treat
pete
C.F. Scheidecker Antunes wrote:
Hello all,
I need to have a web application to call an external app that needs to execute on the background. (It is an *NIX server)
The app that is being called will do a lenghty work but will be called by a php script through the web server.
An user will log in, request a computation, the script will call an external app which will run on the
background. Once the job is completed, a notification will be sent to the user which will log in again and check the results.
The external app performs a data mining computation on the SQL server to produce results which will then be written to an SQL table.
My question is this:
Is it better to write the external app in PHP or Java?
If I write in PHP then I have to have a way to make the PHP not bound to time limitations as the operation might take a while.
If I write it in Java I won't have this concern. However, I am concerned with speed and overhead.
Which one would put a higher load to the processor, a PHP app or a Java one?
Which one will take longer?
Also, there might be more than 20 of these threads running on the server at the same time, hence my concern on which language the app should be writen.
Does anyone has experience with such a scenario?
The input is much apreciated.
Thanks in advance,
C.F.
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