celery.conf
Maximum number of retries before we give up re-establishing a connection to the AMQP broker.
If this is set to 0 or None, we will retry forever.
Default is 100 retries.
The type of exchange. If the exchange type is direct, all messages receives all tasks. However, if the exchange type is topic, you can route e.g. some tasks to one server, and others to the rest. See Exchange types and the effect of bindings.