[mod_python] Re: forks, daemons and other beasts

Daniel J. Popowich dpopowich at comcast.net
Tue Feb 14 10:31:56 EST 2006

Daniel J. Popowich writes:
> Mike Looijmans writes:
> > Forking off processes from a HTTP deamon just does not sound "right" to 
> > me. 
> A hypothetical: the upload takes a minute or so, but post processing
> of the content takes (allow me to exaggerate to make a point) one
> hour...what user is not going to hit cancel and try again...and
> again...and again...then give up and that !@#$ website?  Forking off a
> process from apache is no different than, say, spooling the content in
> a directory and post processing with a polling cron job.  I contend
> forking is cleaner and more intuitive, but it may come down to with
> what the programmer is more comfortable.

I would like to retract that last comment.  Depending on the
application it may be better to spool the uploads and have a cron job
poll the spooling directory for requests: imagine an application that
gets hundreds, even thousands of requests in spurts...in such an
environment, if you're not *very careful* in your programming, forking
processes per request could starve your server of resources.  So, let
me rewrite that last sentence: I contend forking is cleaner and more
intuitive, but it really depends on application needs, system design,
etc., etc., blah, comfort, blah, blah, style, blah, phase of the moon,

Daniel Popowich

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