Publish–Subscribe is a messaging pattern where entities can subscribe to a type of message (defined by a criteria) and receive messages that satisfy that criteria from publishers as and when those messages become available (that is, as and when the events that satisfy that criteria occur).
Publish–Subscribe is a messaging pattern where entities can subscribe to a type of message (defined by a criteria) and receive messages that satisfy that criteria from publishers as and when those messages become available (that is, as and when the events that satisfy that criteria occur).