I tried configuring the redis backend as described in the readme:
MessageBus.configure(
backend: :redis,
url: 'redis://localhost:6479/'
)
However, this does not work, it ignores the port I set and uses 6379 (probably a default).
The only way I got it working after digging through the source code was by doing this:
MessageBus.backend_instance = MessageBus::Backends::Redis.new(url: 'redis://localhost:6479/')