SQL Server 页面大小
SQL Server 的数据页固定为 8 KB。数据页存放行数据,索引页和系统页则存放定位与组织数据所需的元数据。
SQL Server 的数据页固定为 8 KB。数据页存放行数据,索引页和系统页则存放定位与组织数据所需的元数据。
理论上可通过 sync + read 获得线性一致读,但 ZooKeeper 的 sync 实现并未将其作为空写日志复制。leader 直接向 follower 返回 zxid,未像 Raft 的 ReadIndex 或 lease read 一样确认自己仍是 leader。
网络分区或脑裂的边界条件下,这可能返回旧数据。因此它不满足严格的线性一致读语义,尽管该场景罕见且实现上可以修复。
参考:ZooKeeper 论文阅读。
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