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如题,当Mongo服务器发生宕机时,是基于什么算法来怎么保证在内存里未来得及写入磁盘的数据不丢失?
靠得是日记(journal)系统?
具体可参考
@AJW
谢谢。
我在想,会不会存在这种情况,来不及写日记就宕机了?
@asd
絕對有可能還沒寫到 disk 就死雞... 所以需要多幾隻雞備份
如何保證不丟資料, 要看你對資料寫入成功的定義, 寫入資料依據你的寫入策略 w=0,1,..., j=... 來決定是否寫入失敗,
与 萌阔论坛 的连接断开,我们正在尝试重连,请耐心等待