notification message的用法和樣例：
例句
- Switch to the target database to receive event notification messages.
切換到目標數據庫以接收事件通知消息。 - Notification involves obtaining a lock to the critical section, iterating through the map, and notifying the subscribers.
事件通知首先會(huì )獲取一個(gè)臨界區鎖，然后遍歷關(guān)注者映射，對所有的關(guān)注者發(fā)送事件通知消息。
