Re: Best way to check for new data.

From: Havasvölgyi Ottó <h(dot)otto(at)freemail(dot)hu>
To: "Rodrigo Madera" <rodrigo(dot)madera(at)gmail(dot)com>, <pgsql-performance(at)postgresql(dot)org>
Subject: Re: Best way to check for new data.
Date: 2005-10-28 22:13:18
Message-ID: 01cb01c5dc0c$cce42830$8400a8c0@OTTO
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Rodrigo,

You could use LISTEN + NOTIFY with triggers.
In after_insert_statement trigger you could notify a listener, the client could query it immediately.

Best Regards,
Otto

----- Original Message -----
From: Rodrigo Madera
To: pgsql-performance(at)postgresql(dot)org
Sent: Friday, October 28, 2005 11:39 PM
Subject: [PERFORM] Best way to check for new data.

I have a table that holds entries as in a ficticious table Log(id integer, msg text).

Lets say then that I have the program log_tail that has as it´s sole purpose to print newly added data elements.

What is the best solution in terms of performace?

Thank you for your time,
Rodrigo

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