Event ordering controls how an Atlas database trigger processes change events. Enable it to process events sequentially by timestamp; disable it to allow parallel processing for better performance. section 19.2.1
Set it when creating a trigger:
- In the Atlas UI, open Services → Triggers and select Add Trigger. Choose Database and name the trigger. section 19.2.1
- Set event ordering in Trigger Details, then choose the collection, database, or deployment to watch and the operation types that fire the trigger. section 19.2.1
Figure 19.5 The Add Trigger interface in Atlas. At the top, you can choose the trigger type: Database or Scheduled. In the Trigger Details section, you can set the trigger’s name, enable or disable it, choose to skip events when reenabled, and control event ordering. (Image © MongoDB 2025)
The Add Trigger interface shows where event ordering is controlled alongside the trigger’s enabled state. section 19.2.1
