每个值都与一个最低范围和状态指示器关联。

Each value is associated with a minimum range and a status indicator.

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当设有下界的指示器(例如，缓存命中率指示器)的值降低时，它将标识为不健康。

Lower bounded indicators are identified as unhealthy as they decrease in value (for example, the cache hit ratio indicator).

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应该求这个指示器的值，还是应该忽略。

Whether the indicator should be evaluated or ignored

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