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| sathya532k |
 Posted: Fri Apr 20, 2012 10:37 am Post subject: single subcribers to two publisher |
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Novice
Joined: 04 Dec 2006
Posts: 15
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Can someboby help on the below query.
Can a single subriber can subscribe to two individual publisher from a same qmanager. |
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| Vitor |
| Posted: Fri Apr 20, 2012 10:41 am Post subject: Re: single subcribers to two publisher |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| sathya532k wrote: |
| Can a single subriber can subscribe to two individual publisher from a same qmanager. |
Subscribers don't subscribe to publishers. They subscribe to topics. They have (or should have) no visibility of who's publishing those topics.
_________________
Honesty is the best policy.
Insanity is the best defence. |
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| lancelotlinc |
| Posted: Fri Apr 20, 2012 10:42 am Post subject: |
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Jedi Knight
Joined: 22 Mar 2010
Posts: 4941
Location: Bloomington, IL USA
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| sathya532k |
| Posted: Fri Apr 20, 2012 10:44 am Post subject: |
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Novice
Joined: 04 Dec 2006
Posts: 15
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Hi Sorry,
I meant to ask can a single subcriber able to subscribe to two different topic |
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| Vitor |
| Posted: Fri Apr 20, 2012 10:49 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| sathya532k wrote: |
| I meant to ask can a single subcriber able to subscribe to two different topic |
To quote my associate: yes.
_________________
Honesty is the best policy.
Insanity is the best defence. |
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| sathya532k |
| Posted: Fri Apr 20, 2012 11:17 am Post subject: |
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Novice
Joined: 04 Dec 2006
Posts: 15
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Hi Victor,
One more doubt.
We have subscribed for topic A from a publisher A. Now publisher is adding one more Qmanager and decided to publish Topic B from new environment.
Now from my standpoint, will i be able to subscribe from one mq environment to two different topics published by two different Publishers.
App B
Apps ------------------------->Topic1
Topic1
Topic2 ------------------------>App C
Topic2 |
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| Vitor |
| Posted: Fri Apr 20, 2012 11:28 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| sathya532k wrote: |
| We have subscribed for topic A from a publisher A. Now publisher is adding one more Qmanager and decided to publish Topic B from new environment. |
This is a really poor design. Topics should describe the data, not who published them. So if there's a new queue manager on which an application is generating the same or similar data to the first one, the topic should be the same or similar & the subscriber should use a wildcard in the subscription.
You should not have Topic A from Publisher A & Topic B from Publisher B going to the same subscribing application. You should have A/Data & B/Data going to a subscription of #/Data. Or Data/#. Or some other construction of topic string that meets your requirements.
And ideally no reference to the publisher in the topic at all!
_________________
Honesty is the best policy.
Insanity is the best defence. |
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| sathya532k |
| Posted: Fri Apr 20, 2012 11:39 am Post subject: |
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Novice
Joined: 04 Dec 2006
Posts: 15
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Hi Victor,
Thanks. Still i have no information from the other guys.
I received a omunication and thought of discussing on a right forum to get educated.
Once i receive the concrete information, i will ask for suggestions here and best way to proceed.
Im a new bie in pub/sub model. Im just a pure Mq Admin. So this task came to me.
I will come back required information |
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| Vitor |
| Posted: Fri Apr 20, 2012 11:43 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| sathya532k wrote: |
| Im a new bie in pub/sub model. |
You'll find the pub/sub documentation highly useful. Type "topic strings" into the InfoCenter and fan down from there. There are some good descriptions on topic string design & the use of wildcards, as well as publisher / subscriber topology.
| sathya532k wrote: |
| Im just a pure Mq Admin. So this task came to me. |
Because there's a sporting chance you'll be defining topics and subscriptions at an administrative level.
_________________
Honesty is the best policy.
Insanity is the best defence. |
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