每个消费者将自动接收每条消息的副本，无需请求或对主题进行轮询以获得新消息。

Every consumer receives a copy of every message automatically without having to request or poll the topic for new messages.

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在一个两阶段提交协议中，TCS首先轮询参与者，看是否它们准备好了，然后依次向每个参与者发布提交。

In a two-phase commit protocol, the TCS first polls the participants to see if they are ready, and then issues the commit to each in turn.

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在SOAP领域，轮询不太常用，因为客户端通常接收来自事件生产者的请求。

In the SOAP world, polling is less common as a client typically receives requests from the producer of events.

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