A PUBLISH/SUBSCRIBE MESSAGE BROKER

摘要

A method of operating a publish/subscribe message broker. A method in accordance with an embodiment includes receiving a message on a topic from a publisher, identifying the message as a start of a sequence of messages, transmitting the message to one or more existing subscribers to the topic, registering a new subscriber to the topic, receiving a further message on the topic from a publisher, and transmitting the further message to the one or more existing subscribers to the topic, but not to the registered new subscriber to the topic. Following the identifying of the message as a start of a sequence of messages, the message broker creates a new sub-topic corresponding to the sequence of messages and subscribes the one or more existing subscribers to the new topic. Any new messages received that relate to the sequence are published to the sub-topic and not the original topic. Any new subscribers to the topic are not subscribed to the sub-topic.