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MQSeries Publish/Subscriber with out MQSI

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venkat kurra

Posted: Fri Dec 14, 2001 1:14 pm Post subject:

Master

Joined: 18 Oct 2001
Posts: 245
Location: Bloomington , IL

Hi,
I need some information to use publish and subscriber in mqseries.I look at this site http://www-4.ibm.com/software/ts/mqseries/txppacs/ma0c.html.
shell i use this for publish/subscriber with out MQSI installation?
Thanks,
Venkat

sjackson

Posted: Mon Dec 17, 2001 8:56 am Post subject:

Apprentice

Joined: 28 Jun 2001
Posts: 26
Location: Milwaukee

That's the one. It doesnâ€™t give you all the functionality of MQSI, just topic-based Pub-Sub, but we've found it's pretty straight forward to use.

The following is a link to the supporting manual.

http://www-4.ibm.com/software/ts/mqseries/library/manualsa/manuals/mqspublish.html

There is also a new Pub/Sub product to be released early next year, which provides message-based Pub/Sub with XML.

Here is the link for the announcement:

http://www-4.ibm.com/software/ts/mqseries/integrator/pub_subs/index.html

Good luck.
Scott

mpuetz

Posted: Thu Jan 10, 2002 11:51 am Post subject:

Centurion

Joined: 05 Jul 2001
Posts: 149
Location: IBM/Central WebSphere Services

Hi,

MQ Pub/Sub is OK for small & midsize Pub/Sub szenarios. However if you need lot's of retained messages for your application, keep your paws off, since the support pack broker uses MQ to persistently store retained messages.
If you have lots (say more than 1000) of them the broker has to browse through every message on the queue to find the topic (unless you create a lot of topic streams which then becomes an administration issue). Since MQ doesn't have an index on the topic that's a very slow process. MQSI is much, much better in this respect since it uses DB2 to store retained messages and keeps an index on the topics.

If you only need fire & forget it's fast enough for most scenarios. The security concept is hard to maintain if you have many users. MQSI uses a user name service
which makes this a lot easier and also has access control lists.

So think twice on your needs, before you conlcude the support pack is good enough for you or whether need the full MQSI product, which is expensive unfortunately !

_________________
Mathias Puetz

IBM/Central WebSphere Services
WebSphere Business Integration Specialist

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