Elevated Event Delivery Latency

12:39 PM PDT We can confirm elevated event delivery latency for EventBridge events in the US-EAST-1 Region. Other AWS Services that make use of EventBridge may also observe elevated event delivery latency.

1:53 PM PDT We have identified the root cause of the issue resulting in elevated event delivery latency for EventBridge events in the US-EAST-1 Region. We have taken initial mitigation actions, which have reduced the delivery latency for some requests, and continue to work toward full resolution. Other AWS Services that make use of EventBridge may also observe elevated event delivery latency.

3:12 PM PDT We have identified the root cause of the issue resulting in elevated event delivery latency for EventBridge events in the US-EAST-1 Region. We are seeing further reduction of the delivery latency for some requests. We are exploring further mitigation steps as we continue to work toward full resolution. Other AWS Services that make use of EventBridge may also observe elevated event delivery latency.

4:39 PM PDT We have identified the root cause of the issue resulting in elevated event delivery latency for EventBridge events in the US-EAST-1 Region. We are seeing further reduction of the delivery latency for more requests. We have identified the component that is contributing to the event delivery latency and are mitigating impact within this component as we work towards full resolution. Other AWS Services that make use of EventBridge may also observe elevated event delivery latency.

5:36 PM PDT We have identified the root cause of the issue resulting in elevated event delivery latency for EventBridge events in the US-EAST-1 Region. We continue to observe further reduction of the delivery latency for more requests. We have completed additional mitigation steps that have led to the reduction in delivery latency and continue to work towards full resolution. Other AWS Services that make use of EventBridge may also observe elevated event delivery latency.

6:17 PM PDT We continue to take mitigation actions to improve elevated event delivery latency for EventBridge events in the US-EAST-1 Region. While we observe improvement in event delivery latency, we are still experiencing elevated latency in the component responsible for matching events and continue to work towards full resolution. Other AWS Services that make use of EventBridge may also observe elevated event delivery latency.

7:07 PM PDT We previously took steps towards mitigating event delivery latency based upon the suspected root cause and observed improvements in event delivery latency in the US-EAST-1 Region. We have now identified that we are continuing to see event delivery latency due to the component responsible for matching events with EventBridge rules and are taking further steps to mitigate the issue as we work towards full resolution. Other AWS Services that make use of EventBridge may also observe elevated event delivery latency.

8:06 PM PDT We have completed our actions towards mitigating event delivery latency for EventBridge events in the US-EAST-1 Region. Event delivery latency for new events has fully recovered and we are processing the backlog of previously published events. Other AWS Services that make use of EventBridge are observing improvements in elevated event delivery latency as well.

9:05 PM PDT Between 8:31 AM and 9:00 PM PDT, we experienced elevated event delivery latency for EventBridge events in the US-EAST-1 Region. Other AWS services that make use of EventBridge are no longer experiencing elevated event delivery latency. The issue has been resolved and the service is operating normally.