我们通常以每秒事务量之类的指标来度量数据库的速度，也许每秒一百万个事务算得上快。

We usually measure database speed in something like transactions per second, and maybe a million transactions per second is fast.

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这些数据库级的统计数字代表所有收集到的每个时间间隔内数据库调用指标的总计值。

These database-level statistics represent the aggregated values of all collected metrics for all calls to that database per interval.

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此外，我会捕获每个阶段的数据库指标来确定是否有所改善。

Furthermore, we will capture database metrics at each stage to determine whether we made it better.

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