events not matching any rules

Hello,

Not sure about the exact outcome aimed from this question but will try to provide useful answer. Once in the event bus, events are stored for a particular amount of days in something which we can name archive. Reaching deadline these events are purged, in the meantime there is a feature which allows user to replay events from particular archive, if needed.

Hope this helps!

Regards, Totti

According to https://docs.aws.amazon.com/eventbridge/latest/userguide/eb-rule-dlq.html:

When an event isn't successfully delivered to a target because of retriable errors, EventBridge retries sending the event. You set the length of time it tries, and number of retry attempts in the Retry policy settings for the target. By default, EventBridge retries sending the event for 24 hours and up to 185 times with an exponential back off and jitter, or randomized delay. If an event isn't delivered after all retry attempts are exhausted, the event is dropped and EventBridge doesn't continue to process it. To avoid losing events after they fail to be delivered to a target, you can configure a dead-letter queue (DLQ) and send all failed events to it for processing later.