Re: multiple database users

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Now it's clear why everything is faster...no pings are used!
@Perrin: is the patch going into the official Ima::DBI module?

-Alex


-----Urspr=FCngliche Nachricht-----
Von: Perrin Harkins [mailto:perrin@xxxx.xxx]=20
Gesendet: Dienstag, 7. Juni 2005 05:58
An: Jay Strauss
Cc: William Ross; Hartmaier Alexander; cdbi-talk@xxxxxx.xxxxx.xxx
Betreff: Re: multiple database users

Jay Strauss wrote:
> What's the issue if your using mod_perl?

There are at least three problems with this code for use under mod_perl:

- Doesn't pay attention to whether the server is starting or not, so if=20
you load any classes that do a set_up_table() in your startup.pl it will =

cause a connection to open before the fork and wreak havoc when your=20
program tries to use it after the fork.

- Doesn't ping the connection to see if they're dead.  The connections=20
in that hash could time out, and this code would keep trying to use =
them.

- Doesn't call connect at least once per request, so databases that use=20
transactions will not get the Apache::DBI rollback handler registered,=20
leaving you wide open for hanging transactions if your code dies in an=20
unexpected place.

> And can you solve issue and=20
> provide a single design that can be used in mod_perl and non-mod_perl=20
> environments?

You can merge in the stuff from the mod_perl page on the wiki.  I also=20
have a patch for Ima::DBI that I'll try to clean up and post tomorrow.

- Perrin

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