Because driver maintains connection to both nodes while write transactions are directed to the primary node, read transactions can be directed to either node.
由于驱动程序维护与两个节点的连接，同时写事务被定向到主节点，因此读事务可以定向到任何一个节点。
Read transactions require a consistent view of the data -- meaning if two read transactions are submitted at the same time, they should produce uniform result sets if they select the same data ranges.
读事务需要数据的一致视图 ——即当同时提交两个读事务时，如果它们选择相同的数据范围，那么应该产生一致的结果集。
Read transactions require a consistent view of the data -- meaning if two read transactions are submitted at the same time, they should produce uniform result sets if they select the same data ranges.
读事务需要数据的一致视图 ——即当同时提交两个读事务时，如果它们选择相同的数据范围，那么应该产生一致的结果集。
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