# Logging and monitoring Amazon EventBridge Pipes using Amazon CloudWatch Logs
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You can log EventBridge Pipes invocations using CloudTrail and monitor the health of your pipes using CloudWatch metrics.

## CloudWatch metrics
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EventBridge Pipes sends metrics to Amazon CloudWatch every minute for everything from a pipe executions being throttled to a target successfully being invoked.


| Metric | Description | Dimensions | Units | 
| --- | --- | --- | --- | 
|  `Concurrency`  |  The number of concurrent executions of a pipe.  | AwsAccountId | None | 
| `Duration` |  Length of time the pipe execution took.  | PipeName | Milliseconds | 
|  `EventCount`  |  The number of events a pipe has processed.  | PipeName | None | 
|  `EventSize`  |  The size of the payload of the event that invoked the pipe.  | PipeName | Bytes | 
|  `ExecutionThrottled`  |  How many executions of a pipe were throttled.  This value will be `0` if no executions were throttled.   | AwsAccountId, PipeName | None | 
|  `ExecutionTimeout`  |  How many executions of a pipe timed out before completing execution.  This value will be `0` if no executions timed out.   | PipeName | None | 
|  `ExecutionFailed`  |  How many executions of a pipe failed.  This value will be `0` if no executions failed.   | PipeName | None | 
|  `ExecutionPartiallyFailed`  |  How many executions of a pipe partially failed.  This value will be `0` if no executions partially failed.   | PipeName | None | 
|  `EnrichmentStageDuration`  |  How long the enrichment stage took to complete.  | PipeName | Milliseconds | 
|  `EnrichmentStageFailed`  |  How many executions of a pipe's enrichment stage failed.  This value will be `0` if no executions failed.   | PipeName | None | 
| `Invocations` |  Total number of invocations.  | AwsAccountId, PipeName | None | 
|  `TargetStageDuration`  |  How long the target stage took to complete.  | PipeName | Milliseconds | 
|  `TargetStageFailed`  |  How many executions of a pipe's target stage failed.  This value will be `0` if no executions failed.   | PipeName | None | 
| `TargetStagePartiallyFailed` | How many executions of a pipe's target stage partially failed.  This value will be `0` if no target stage executions partially failed.   | PipeName | None | 
| `TargetStageSkipped` | How many executions of a pipe's target stage were skipped (for example, due to the enrichment returning an empty payload).  | PipeName | Count | 

## Dimensions for CloudWatch metrics
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CloudWatch metrics have *dimensions*, or sortable attributes, which are listed below.


|  Dimension  |  Description  | 
| --- | --- | 
|  AwsAccountId  |  Filters the available metrics by account ID.  | 
|  PipeName  |  Filters the available metrics by pipe name.  |