Fanout Exchange Type 扇形交换类型
As our example already hinted the fanout exchange does not interpret anything at all: it delivers messages to all the queues bound to it.
我们的例子中，fanout交换器不会解释任何东西：它只是将消息投递到所有绑定到它的队列中。
To become friends with a user Bob, user Alice sends a message to the fanout exchange iends. We assume that this exchange is somehow access restricted 24: ordinary users cannot bind queues to it.
为了成为bob的好友，Alice首先得发送一个消息给fanout交换器iends，我们假设这个交换器是访问受限24的：普通用户不能够将队列绑定到它。
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