Optimistic locking is an extremely efficient concurrency control method that guarantees data integrity without placing any physicallock in the database.
乐观锁是一个极其有效的并发性控制方法,它可以确保数据完整性而又无需在数据库中放置任何物理锁。
2
In this case, a logical lock (not a physical database lock) is used to flag that a row is in use for a long-term duration.
在本方案中,通过逻辑锁(而不是物理锁)来对在较长时间中使用的数据行进行标记。
3
While the amount of logical ISAM instructions we have performed is at 6 million reads, the number of lock requests (which is a physical indicator of what was read) is at 59 billion.