For instance, press the a key in the display to add a new log file.
例如，在显示中按a键可以添加新的日志文件。
2
The transaction log -- the key to durability
事务日志 —— 持久性的关键
3
The lines for Database-1, Database-2, and Coordinator represent both time (flowing left to right) and also some key records recorded onto a recovery log.