Publish/subscribe

Connect independent publishers and subscribers through topics and message queues.

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Publishers send messages to topics, subscribers consume them through queues, and neither side knows about the other - the pattern, the vocabulary and when to use it.

What is publish/subscribe?

Concepts

What is publish/subscribe? Topics, queues, publishers and subscribers, and how pub/sub differs from point-to-point calls. Message flow How a message travels from a publisher through a topic to each subscriber's queue. Messages What a message contains - payload, priority, expiration and correlation.

Endpoints

Publishers Publish messages to topics from services and external applications. Subscribers Consume messages through queues, in push and pull deliveries.

APIs

REST API Publish and receive messages over REST from any technology. Python API Publish and subscribe from services with self.pubsub.

Security

Pub/sub security Who may publish and who may subscribe to each topic.