US Patent 10298661 Message delivery in a messaging system

A method, hardware system, and/or computer program product controls message delivery from a publisher application to one or more subscriber applications in a publish/subscribe messaging mechanism. The one or more subscriber applications have a plurality of subscriptions registered with a broker application of the publish/subscribe messaging mechanism. A unified subscription description representing the plurality of subscriptions registered with the broker application is generated, and is then communicated to the publisher application.