Mailing-List: contact users-help@activemq.apache.org; run by ezmlm
Precedence: bulk
Reply-To: users@activemq.apache.org
Received-SPF: pass (athena.apache.org: domain of rajdavies@gmail.com
 designates 209.85.128.188 as permitted sender)
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=beta;
        h=received:mime-version:in-reply-to:references:content-type:message-id:content-transfer-encoding:from:subject:date:to:x-mailer;
        b=k3xCQL2tUv15j2F9PBuqhmL/QYXZBQP580wPujOyWP7qJaEwKygvA4FwH7I+eIPDvwDIqIvPyNDAXufB4/a9xwbHi9tAhBTRlygQmHXFNd9Hr8uja2GMMcC4itGoJyC4y61Ia7MAfUjEMsx3Wia08XC/CDU2YSAzmaDG1xgei6s=
Mime-Version: 1.0 (Apple Message framework v752.3)
In-Reply-To: <12808111.post@talk.nabble.com>
References: <12790117.post@talk.nabble.com> <12808111.post@talk.nabble.com>
Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed
Message-Id: <634AAC6A-CAD4-4CE6-AE47-2BA736FEE394@gmail.com>
Content-Transfer-Encoding: 7bit
From: Rob Davies <rajdavies@gmail.com>
Subject: Re: Equivalent of Tibco EMS FailSafe
Date: Fri, 21 Sep 2007 05:26:58 +0100
To: users@activemq.apache.org

ActiveMQ has a pluggable storage mechanism - and the ability to sync  
to disk for every write is usually a property of the Store used by  
the broker.  For amq 5.0  - the default store is the amq store -  
where the property is syncOnWrite, default is off.
On Sep 21, 2007, at 12:44 AM, tendlu wrote:

>
> James or Hiram?
>
>
> tendlu wrote:
>>
>> Tibco has a configuration to mark a queue "fail safe". This means the
>> messages for a "fail safe" queue is synchronously written to the  
>> disk. In
>> other words, no buffering is done for write (probably uses fsync  
>> --  that
>> gaurantees the data is flushed to the disk). If the server goes  
>> down, no
>> message is lost. This is described as the most "reliable mode".
>>
>> Is there an equivalent to this in ActiveMQ?
>>
>> Tibco also has a "non fail safe" mode for the queues which means  
>> it does
>> not synchronously write to the disk. On other words, some kind of
>> buffering is done by the writer. "Non fail safe" mode performs far  
>> better
>> than "fail safe" because of the synchronous write.
>>
>>
>> thanks in advance.
>>
>
> -- 
> View this message in context: http://www.nabble.com/Equivalent-of- 
> Tibco-EMS-FailSafe-tf4485108s2354.html#a12808111
> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>