Publish & subscribe

Overview Overview of the pub/sub API building block Learn more → How to: Publish & subscribe to topics Learn how to send messages to a topic with one service and subscribe to that topic in another service Learn more → Messages with Cloudevents Learn why Dapr uses CloudEvents, how they work in Dapr pub/sub, and how to create CloudEvents. Learn more → Messages without CloudEvents Learn when you might not use CloudEvents and how to disable them. Learn more → How-To: Route events Learn how to route messages from a topic to different event handlers based on CloudEvent fields Learn more → Subscription types Learn more about the subscription types that allow you to subscribe to message topics. Learn more → Dead Letter Topics Use subscription dead letter topics to forward undeliverable messages Learn more → How to: Namespace consumer groups Learn how to use the metadata-based namespace consumer group in your component Learn more → How to: Horizontally scale subscribers with StatefulSets Learn how to subscribe with StatefulSet and scale horizontally with consistent consumer IDs Learn more → Scope topic access Use scopes to limit pub/sub topics to specific applications Learn more → Message TTL Use time-to-live in pub/sub messages. Learn more → Publish and subscribe to bulk messages Learn how to use the bulk publish and subscribe APIs in Dapr. Learn more →
Last modified July 21, 2026: Merge pull request #5260 from marcduiker/fix-docs-links (7692d61)