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Refine sentences #341

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Jan 27, 2024
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Refine sentences #341

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Expand Up @@ -264,7 +264,7 @@ B 树的基本底层写操作是用新数据覆写硬盘上的页面，并假定

### 比较B树和LSM树

尽管 B 树实现通常比 LSM 树实现更成熟，但 LSM 树由于性能特征也非常有趣。根据经验，通常 LSM 树的写入速度更快，而 B 树的读取速度更快【23】。LSM 树上的读取通常比较慢，因为它们必须检查几种不同的数据结构和不同压缩（Compaction）层级的 SSTables。
尽管 B 树实现通常比 LSM 树实现更成熟，LSM 树由于其性能特征的关系，仍然引起了不少关注。根据经验，通常 LSM 树的写入速度更快，而 B 树的读取速度更快【23】。LSM 树上的读取通常比较慢，因为它们必须检查几种不同的数据结构和不同压缩（Compaction）层级的 SSTables。

然而，基准测试的结果通常和工作负载的细节相关。你需要用你特有的工作负载来测试系统，以便进行有效的比较。在本节中，我们将简要讨论一些在衡量存储引擎性能时值得考虑的事情。

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