获取日志存储区中的可用字节数。

The number of bytes available in the log store.

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该类别中的系统计数器跟踪如可用字节和缓存字节等数据。

System counters within this category track data such as bytes available and bytes cached.

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此类别内的系统计数器跟踪内存数据，如可用字节数和缓存的字节数。

System counters within this category track memory data such as the number of bytes available and the number of bytes cached.

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