pg.ddx.io  pgsql-sql@postgresql.org mailing list archive  
help / color / mirror / Atom feed
From: Markus Schaber <schabi@logix-tt.com>
To: pgsql-sql <pgsql-sql@postgresql.org>
Cc: weigelt@metux.de
Subject: Re: Mutex via database
Date: Wed, 04 May 2005 13:38:30 +0200
Message-ID: <4278B436.6050102@logix-tt.com> (raw)
In-Reply-To: <20050504112846.GA8968@nibiru.borg.metux.de>
References: <20050504112846.GA8968@nibiru.borg.metux.de>

Hi, Enrico,

Enrico Weigelt wrote:

> i've a dozen of servers processing jobs from a database. 
> Some servers may only run exactly once, otherwise I'll get jobs 
> done twice. 
> 
> Is there any way for implementing an kind of mutex within the
> database, which is automatically released if the holding 
> process/connection dies ?

Use the "LOCK" sql command, possibly together with transaction isolation
set to serializable.

Markus



view thread (2+ messages)

Message-ID: <4278B436.6050102@logix-tt.com>
Permalink:  ../4278B436.6050102@logix-tt.com/
Also on:    postgresql.org/message-id/4278B436.6050102@logix-tt.com

 · 

reply

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: pgsql-sql@postgresql.org
  Cc: schabi@logix-tt.com, weigelt@metux.de
  Subject: Re: Mutex via database
  In-Reply-To: <4278B436.6050102@logix-tt.com>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox