Overview of the pub/sub API building block
The documentation you are viewing is for Dapr v1.9 which is an older version of Dapr. For up-to-date documentation, see the latest version.
Publish & subscribe
Learn how to send messages to a topic with one service and subscribe to that topic in another service
Learn why Dapr uses CloudEvents, how they work in Dapr pub/sub, and how to create CloudEvents.
Learn when you might not use CloudEvents and how to disable them.
Learn how to route messages from a topic to different event handlers based on CloudEvent fields
Learn more about the methods by which Dapr allows you to subscribe to topics.
Use subscription dead letter topics to forward undeliverable messages
Learn how to use the metadata-based namespace consumer group in your component
Use scopes to limit pub/sub topics to specific applications
Use time-to-live in pub/sub messages.
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