From: | "Christopher Browne" <cbbrowne(at)gmail(dot)com> |
---|---|
To: | hewei <heweiweihe(at)gmail(dot)com> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: the feasibility of sending email from stored procedure in Postgres |
Date: | 2008-02-15 14:31:59 |
Message-ID: | d6d6637f0802150631h505931eby2aa7f75e9fe2d3d7@mail.gmail.com |
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Lists: | pgsql-general |
On 2/14/08, hewei <heweiweihe(at)gmail(dot)com> wrote:
> Can send email from stored procedure in Postgres?
In principle, yes, using one of the "untrusted" stored function
languages. pl/perl, pl/sh, pl/python, and such.
I wouldn't do things that way...
I would instead queue messages (or suitable information about them) in
a table, and have a process outside PostgreSQL periodically poll for
them. There are several benefits to that approach:
1. You're not pushing error handling of email problems inside the
PostgreSQL back end. That could be rather risky.
2. You're not spawning an MTA connection every time you submit a
message. This could be rather expensive.
In contrast, the "poll a queue" approach lets something completely
external deal with email problems. And it should be able to submit
multiple messages more or less at once, which should improve
efficiency rather a lot; no need to open up sockets to port 25 a whole
bunch of times...
--
http://linuxfinances.info/info/linuxdistributions.html
"The definition of insanity is doing the same thing over and over and
expecting different results." -- assortedly attributed to Albert
Einstein, Benjamin Franklin, Rita Mae Brown, and Rudyard Kipling
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