Phoenix.pm: Apache::Session::Lock::File under mod_perl
Scott Walters
scott at illogics.org
Wed Jan 15 14:51:25 CST 2003
Ahhh, I distinctly remember the 18th time that Apache::Session failed on
Contact Designs. We were sitting in our attorney's office in a downtown
Phoenix highrise, arbitrating with an non-paying client who was alleging
that we didn't have the experience needed to write an e-commerce site,
so they could step out of the contract and use Yahoo! sites, which look
like garbage - this after cating to demand after demand by this client.
Laptop and Ricochet wireless Internet on the confrence table, I prepare
to demonostrate the check out process on another clients site - when
Apache::Session decides that another processes hasn't released the SHM
lock.
This is an absolutely true story. Apache::Session caused constant
problems in each of its modes - locking on SHM, locking on a database,
serializing to file, serializing to database, etc.
I've flamed Apache::Session in this channel before, and I'll do it again.
Use require, flock, and Storable, just like God intended.
Apache::Session is one of those things that looks cool, but fails
erratically under real-world conditions. Sorry to be patronizing, but I told
you so, nanana!
-scott
>
>
> Anyone out there using Apache::Session::File and
> Apache::Session::Lock::File under mod_perl? The problem I am having is
> that Apache::Session::Lock::File is aparently not releasing the
> exclusive lock when the tied hash goes out of scope. I can get a simple
> test program to work from the command line, but when I try it under
> mod_perl, it locks on the tie to the existing session. If I delete the
> lock file, it works fine. Any ideas?
>
>
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