Using Amazon DocumentDB Event Subscriptions
Amazon DocumentDB uses Amazon Simple Notification Service (Amazon SNS) to provide notifications when an Amazon DocumentDB event occurs. These notifications can be in any form that is supported by Amazon SNS for an Amazon Web Services Region, such as an email, a text message, or a call to an HTTP endpoint.
Amazon DocumentDB groups these events into categories that you can subscribe to so that you can be notified when an event in that category occurs. You can subscribe to an event category for an instance, cluster, snapshot, cluster snapshot, or for a parameter group. For example, if you subscribe to the Backup category for a given instance, you are notified whenever a backup-related event occurs that affects the instance. You also receive notification when an event subscription changes.
Events occur at both the cluster and the instance level, so you can receive events if you subscribe to a cluster or an instance.
Event subscriptions are sent to the addresses you provide when you create the subscription. You might want to create several different subscriptions, such as a subscription that receives all event notifications and another subscription that includes only critical events for your production instances. You can easily turn off notification without deleting a subscription. To do so, set the Enabled radio button to No in the Amazon DocumentDB console.
Important
Amazon DocumentDB doesn't guarantee the order of events sent in an event stream. The event order is subject to change.
Amazon DocumentDB uses the Amazon Resource Name (ARN) of an Amazon SNS topic to identify each subscription. The Amazon DocumentDB console creates the ARN for you when you create the subscription.
Billing for Amazon DocumentDB event subscriptions is through Amazon SNS. Amazon SNS fees apply when using event notification. For more information, see Amazon Simple Notification Service Pricing. Other than Amazon SNS charges, Amazon DocumentDB does not bill for event subscriptions.