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I'd love to see some docs/examples around supporting pluggable brokers; Faust looks like exactly what I want from a python stream processor, but for various technical and operational reasons it would be nice to be able to provide a RabbitMQ/AMQP broker.

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We added two levels of abstractions for this purpose:

- A Stream iterates over a channel

- A Channel implements: `channel.send` and `channel.__aiter__`.

- A topic is a "named" channel backed by a Kafka topic

- Further the topic is backed by a Transport

- Transport is very Kafka specific

To implement support for AMQP the idea is you only need to implement a custom channel.

If you open an issue we can consider how to best implement it.

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