phr-n2001d at nightsong.com
Sun Oct 28 06:19:52 CET 2001
Peter Hansen <peter at engcorp.com> writes:
> > How frequently does this type of thing happen? If Python is in the habit
> > of crashing randomly, that may make it inadvisable to write
> > long-running servers that need to stay up. Perhaps it's more
> > appropriate to write servers Apache-style, forking new processes and
> > reinitializing every so often.
> Not necessary if your system is stable. Python can run indefinitely
> unless you have hit some obscure bug. As a small trivial example
> of its stability, we have had our Intranet server running
> under Zope (on Redhat 7.0) for the last 84 days straight, being
> used daily and extensively by at least twenty people. No troubles.
This is encouraging to hear. However, obscure bugs do exist. I may
be hitting a bug in some extension module or in something having to do
with module reloading.
> We are also developing applications based on Python which will
> be expected to run potentially for years without being shut down ...
> and I have no concerns about this (at least none related to Python! ;-).
This is my concern--if they're EXPECTED to run for years without
shutdown, but they crash unexpectedly instead, that can be a big
problem. Best is to not have them crash, but next-best is to plan
ahead for occasional crashes. So I'm wondering what I need to do.
Note that if you're planning to run a server for years without
attention, besides UPS's you'll also want to have some kind of
hardware watchdog timer on the hosting computer--another form of crash
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