分布式锁定也在一些分布式数据库(如Oracle Real Application Clusters(RAC)【18】)中以更细化的级别使用。 RAC对每个磁盘页面使用一个锁,多个节点共享对同一个磁盘存储系统的访问权限。由于这些可线性化的锁处于事务执行的关键路径上,RAC部署通常具有用于数据库节点之间通信的专用集群互连网络。
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