RSS将最近更新的信息分发给许多接收者，非常类似广播系统。
RSS distributes recently updated information to many receivers, much like a broadcast system.
上次，我们构建了一个简单的日志系统来广播消息到多个接收者。
In the previous tutorial we built a simple logging system. We were able to broadcast log messages to many receivers.
注意，有序广播可以被接收者“消费”，所以他们也许不会被发送到所有的应用中。
Note that ordered broadcasts can be "consumed" by a recipient, so they may not be delivered to all applications.
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