With the 2-safe visible setting, the acknowledgement is sent when the data is visible to applications.

对于2 - safe visible设置，在应用程序可以看到数据时发送确认。

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With the 2-safe durable setting, the acknowledgement is sent when the data is written to disk.

对于2 - safe durable设置，在数据被写到磁盘时发送确认。

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With the 2-safe received setting, the acknowledgement is sent when the data is received.

对于2 - safe received设置，在收到数据时发送确认。

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Satellite, surprisingly, came out as having the best throughput although before you rush out to get satellite service remember that the roundtrip latency (the time it takes a data packet to go from your PC to its destination and for an acknowledgement to come back) over a satellite connection is often in the range of 900 milliseconds to 1, 400 milliseconds.

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