为了将信息从互联网中的某个角落传输到另外一边，通信协议令信息在传输过程中经过了数次的复制。
In order to send a message from one corner of the Internet to another, the protocols of communication demand that the whole message be copied along the way several times.
通过利用点对点队列，以及通过 MQ 使是事件流负荷从入站边保持平衡，可以确保没有复制事件被 Business Events 接受。
Through the use of point-to-point queues and having the event stream load balanced by MQ from the inbound side, you can ensure that there are no duplicate events being received by Business Events.
对于同步复制，目标节点不接收到此写入操作，生产节点上的写入操作就无法完成，这样可以保证两边的复制一致。
With synchronous replication, the write on the production node does not complete until it has been received on the target node, so you are guaranteed identical copies on each side.
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