| From: | Dimitri Fontaine <dimitri(at)2ndQuadrant(dot)fr> |
|---|---|
| To: | Chris Travers <chris(dot)travers(at)gmail(dot)com> |
| Cc: | Darren Duncan <darren(at)darrenduncan(dot)net>, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: Using Postgresql as application server |
| Date: | 2011-08-18 10:40:05 |
| Message-ID: | 87mxf780l6.fsf@hi-media-techno.com |
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| Lists: | pgsql-admin pgsql-general |
Chris Travers <chris(dot)travers(at)gmail(dot)com> writes:
> I want an email to go out to the ordering manager when the quantity I
> have of an item drops below the re-order point. I also want this
> email NOT to go out if the transaction rolls back. (Wait, the order
> of 50000 widgets I just processed rolled back because it isn't to a
> valid customer! We normally only sell 50000 per year anyway. No need
> for the email.)
Just use PGQ and be done with it. You have transactional and
asynchronous behavior. Typically, a trigger would produce events in the
queue, and a separate daemon will consume the queue and send emails.
Regards,
--
Dimitri Fontaine
http://2ndQuadrant.fr PostgreSQL : Expertise, Formation et Support
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