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What is the purpose of the change

修复集群模式使用内置数据库配置中心配置文件丢失

Brief changelog

XX

Verifying this change

改为：判断本地数据库和内存缓存中的数据一致，且判断磁盘中是否有对应文件成立才不写磁盘，否则还是继续写磁盘。

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