ACR pre-connection 客户端路由
pre-defined set of connection 预定义的连接组
Pre Cooling Connection Pipe 预冷连接管路
These files are pre-allocated during the first connection to the database.
这些文件是在第一次连接数据库时预先分配好的。
After adding a new connection, all schema information is asynchronously pre-fetched and cached.
添加新连接之后,所有模式信息都被异步地预取和缓存。
At this point, the domain is not associated with any connection, so this information is not pre-loaded with the database information.
在此刻,域还没有与任何连接相关联,因此该信息没有预先包含任何数据库信息。
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