Re: Event-driven programming?

From: Chris Browne <cbbrowne(at)acm(dot)org>
To: pgsql-general(at)postgresql(dot)org
Subject: Re: Event-driven programming?
Date: 2007-09-12 21:28:01
Message-ID: 60fy1jzi8u.fsf@dba2.int.libertyrms.com
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dickon(dot)glanville(at)gmail(dot)com ("Jay Dickon Glanville") writes:
> On 9/12/07, Martijn van Oosterhout <kleptog(at)svana(dot)org> wrote:
>> On Wed, Sep 12, 2007 at 12:36:22PM -0400, Jay Dickon Glanville wrote:
>> > Hello all.
>> >
>> > Is it possible for PostgreSQL to notify me of a successful transaction commit?
>>
>> There is the LISTEN/NOTIFY mechanism. It's not automatic but I think it
>> does most of what oyu want.
>
> Thanks for the suggestion Martijn, but I get the impression from the
> documentation that LISTEN/NOTIFY is for client to client
> communication. This type of communication isn't what I'm looking for.
> I want server to client communication, where the server is notifying
> me on successful commit of transaction.

It may be closer to what you want than you think.

The server *does* notify listeners upon successful commit of a
transaction, and the timing is indeed right; the time of the
notification is COMMIT time, not before.
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