Monitoring Amazon EventBridge

EventBridge sends metrics to Amazon CloudWatch every minute for everything from the number of matched events to the number of times a target is invoked by a rule.

The following video reviews monitoring and auditing EventBridge behavior through CloudWatch:

EventBridge metrics

The AWS/Events namespace includes the following metrics.

For the metrics that use Count as a unit, Sum and SampleCount tend to be the most useful statistics.

Metric	Description
DeadLetterInvocations	The number of times a rule’s target isn't invoked in response to an event. This includes invocations that would result in running the same rule again, causing an infinite loop. Valid Dimensions: RuleName Units: Count
Events	The number of partner events ingested by EventBridge. Valid Dimensions: EventSourceName Units: Count
FailedInvocations	The number of invocations that failed permanently. This doesn't include invocations that are retried or invocations that succeeded after a retry attempt. It also doesn't count failed invocations that are counted in DeadLetterInvocations. Note EventBridge only sends this metric to CloudWatch if it isn't zero. Valid Dimensions: RuleName Units: Count
Invocations	The number of times a target is invoked by a rule in response to an event. This includes successful and failed invocations, but doesn't include throttled or retried attempts until they fail permanently. It doesn't include DeadLetterInvocations. Note EventBridge only sends this metric to CloudWatch if it isn't zero. Valid Dimensions: None, RuleName Units: Count
InvocationAttempt	Number of times EventBridge attempted invoking a target. Valid Dimensions: None Units: Count
InvocationsCreated	The total number of invocations created in response to each event. This metric is often used to monitor utilization of the Invocations throttle limit in transactions per second EventBridge service quota. Valid Dimensions: None Units: Count
InvocationsFailedToBeSentToDlq	The number of invocations that couldn't be moved to a dead-letter queue. Dead-letter queue errors occur due to permissions errors, unavailable resources, or size limits. Note EventBridge only sends this metric to CloudWatch if it isn't zero. Valid Dimensions: RuleName Units: Count
InvocationIngestiontoInvocationCompleteLatency	The time taken from event ingestion to completion of the first successful invocation attempt. Valid Dimensions: EventBusName, None, RuleName Units: Milliseconds
InvocationIngestiontoInvocationStartLatency	The time to process events, measured from when an event is ingested by EventBridge to the first invocation of a target. Valid Dimensions: None, RuleName Units: Milliseconds
InvocationsSentToDlq	The number of invocations that are moved to a dead-letter queue. Note EventBridge only sends this metric to CloudWatch if it isn't zero. Valid Dimensions: RuleName Units: Count
MatchedEvents	If EventBusName or EventSourceName is specified, the number of events that matched with any rule. If RuleName is specified, the number of events that matched with a specific rule. Valid Dimensions: EventBusName, RuleName, EventSourceName Units: Count
RetryInvocationAttempts	Number of times target invocation has been retried. Note EventBridge only sends this metric to CloudWatch if it isn't zero. Valid Dimensions: None Units: Count
SuccessfulInvocationAttempts	Number of times target was successfully invoked. Valid Dimensions: None Units: Count
ThrottledRules	The number of times rule execution was throttled. Invocations for those rules may be delayed. For more information, see Invocations throttle limit in transactions per second in EventBridge quotas. Valid Dimensions: RuleName Units: Count
TriggeredRules	The number of rules that have run and matched with any event. You won't see this metric in CloudWatch until a rule is triggered. Valid Dimensions: RuleName Units: Count

EventBridge PutEvents metrics

The AWS/Events namespace includes the following metrics pertaining to the PutEvents API requests.

For the metrics that use Count as a unit, Sum and SampleCount tend to be the most useful statistics.

Metric	Description
PutEventsApproximateCallCount	Approximate number of received PutEvents requests. Valid Dimensions: None Units: Count
PutEventsApproximateFailedCount	Approximate number of failed PutEvents requests. Valid Dimensions: None Units: Count
PutEventsApproximateSuccessCount	Approximate number of successful PutEvents requests. Valid Dimensions: None Units: Count
PutEventsApproximateThrottledCount	Number of PutEvents requests rejected due to throttling. Valid Dimensions: None Units: Count
PutEventsEntriesCount	The number of event entries contained in a PutEvents request. Valid Dimensions: None Units: Count
PutEventsFailedEntriesCount	The number of event entries contained in a PutEvents request that failed to be ingested. Valid Dimensions: None Units: Count
PutEventsLatency	The time taken per PutEvents request. Valid Dimensions: None Units: Milliseconds
PutEventsRequestSize	The size of the PutEvents request. Valid Dimensions: None Units: Bytes

EventBridge PutPartnerEvents metrics

The AWS/Events namespace includes the following metrics pertaining to the PutPartnerEvents API requests.

Note

EventBridge only includes metrics pertaining to PutPartnerEvents requests in SaaS partner accounts that send events. For more information, see Receiving events from a SaaS partner with Amazon EventBridge

For the metrics that use Count as a unit, Sum and SampleCount tend to be the most useful statistics.

Metric	Description
PutPartnerEventsApproximateCallCount	Approximate number of received PutPartnerEvents requests. Valid Dimensions: None Units: Count
PutPartnerEventsApproximateFailedCount	Approximate number of failed PutPartnerEvents requests. Valid Dimensions: None Units: Count
PutPartnerEventsApproximateThrottledCount	Number of PutPartnerEvents requests rejected due to throttling. Valid Dimensions: None Units: Count
PutPartnerEventsApproximateSuccessCount	Approximate number of successful PutPartnerEvents requests. Valid Dimensions: None Units: Count
PutPartnerEventsEntriesCount	The number of event entries contained in a PutPartnerEvents request. Valid Dimensions: None Units: Count
PutPartnerEventsFailedEntriesCount	The number of event entries contained in a PutPartnerEvents request that failed to be ingested. Valid Dimensions: None Units: Count
PutPartnerEventsLatency	The time taken per PutPartnerEvents request. Valid Dimensions: None Units: Milliseconds

Dimensions for EventBridge metrics

EventBridge metrics have dimensions, or sortable attributes, which are listed below.

Dimension	Description
EventBusName	Filters the available metrics by event bus name.
EventSourceName	Filters the available metrics by partner event source name.
RuleName	Filters the available metrics by rule name.