For example, if one of two private network connections fails, VCS has the remaining network connection and the disk heartbeat region that allow heartbeats to continue normally.
例如，假设两个私有网络通讯中的一个失效，VCS拥有剩下的网络通讯和磁盘心跳区域，允许心跳正常地继续下去。
The challenge here is that you now run the risk of accumulating a nearly infinite number of these private states on the server, so you'll need a way to push those that aren't being used out to disk.
这里的挑战在于，您现在冒着累积服务器上几乎无数个这种私有状态的风险，所以需要一种方法来将那些目前不使用的状态推到磁盘中。
If the filename is an empty string, then a private, temporary on-disk database will be created.
如果文件名是空字符串，那么将创建私有的、临时磁盘数据库。
If the filename is an empty string, then a private, temporary on-disk database will be created.
如果文件名是空字符串，那么将创建私有的、临时磁盘数据库。
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