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Publishing locally and globally

Publishers can specify that they want a publication to be published locally. If they do not specify this, the publication is made available globally through all the brokers in the network. Local publications can be received only by subscribers who register local subscriptions at the same broker as the publisher. Local retained publications are retained only at this broker.

Applications can publish and subscribe locally to the same topic and stream at different brokers. Each broker deals with the publications and subscriptions in isolation from the other brokers.

Mixing local and global publications and subscriptions to the same topic and stream is not recommended. A local publication is not delivered to a subscriber registered globally, even if they are at the same broker.

 

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