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Re: [xmlblaster] question about persistent in xmlBlaster.

To: xmlblaster at server.xmlblaster.org
Subject: Re: [xmlblaster] question about persistent in xmlBlaster.
From: Marcel Ruff <mr at marcelruff.info>
Date: Mon, 18 Aug 2003 15:16:20 +0200
In-reply-to: <Law10-F771mrvoGdKO800005f13 at hotmail.com>
References: <Law10-F771mrvoGdKO800005f13 at hotmail.com>
Reply-to: xmlblaster at server.xmlBlaster.org
Sender: owner-xmlblaster at server.xmlBlaster.org
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zhang zhi wei wrote:
> When publish a message to xmlBlaster, i use -persistent,
> will xmlBlaster ensure exactly once delivery to subscriber?

xmlBlaster guarantees exactly one delivery.
However - on certain crash situations a message may be
resent (when the server got no ACK).
Avoiding this needs transaction support (two phase), which
is not yet implemented.

Redeliverd messages are marked with the QoS tag

  <redeliver>12</redeliver>

See

  http://www.xmlblaster.org/xmlBlaster/doc/requirements/engine.callback.html

regards

Marcel

-- 
http://www.xmlBlaster.org

References:
- [xmlblaster] question about persistent in xmlBlaster.
  - From: "zhang zhi wei" <zzwzyz at hotmail.com>

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