MapR-DB 落在 CAP 定理的什么地方?
Where does MapR-DB fall in the CAP theorem?
考虑到 MapR-DB 是一个分布式数据库,它要么属于 "CP" 类别,要么属于 "AP" 类别。
引用自http://maprdocs.mapr.com/home/MapROverview/c_maprdb_new.html
When an update is applied to a tablet in the master container (which is at the head of a replication chain), the update is applied serially to the replicas of that container in the chain. The update is complete only when all replicas in the chain are updated.
这意味着在网络分区的情况下,复制链被破坏(或无限期延迟),导致操作无法成功完成。这意味着他们选择了一致性而不是可用性,使 MapR-DB 成为 CP 系统,而不是 AP。
考虑到 MapR-DB 是一个分布式数据库,它要么属于 "CP" 类别,要么属于 "AP" 类别。
引用自http://maprdocs.mapr.com/home/MapROverview/c_maprdb_new.html
When an update is applied to a tablet in the master container (which is at the head of a replication chain), the update is applied serially to the replicas of that container in the chain. The update is complete only when all replicas in the chain are updated.
这意味着在网络分区的情况下,复制链被破坏(或无限期延迟),导致操作无法成功完成。这意味着他们选择了一致性而不是可用性,使 MapR-DB 成为 CP 系统,而不是 AP。