Logging and metrics

This section explains logging and metrics for overlay ads in MediaTailor. For more information about setting up logging, see Monitoring and tagging.

CloudWatch logs

CloudWatch collects the following log information about overlay ads:

• VAST_RESPONSE - Shows information about the non-linear ads list.

• FILLED_PROVIDER_OVERLAY - Shows information about the non-linear ads.

Note

The RAW_ADS_RESPONSE is an optional event that shows the original response from the ADS. Using this event is especially helpful in a staging and testing environment. To enable this event on a configuration or account, submit a ticket to AWS Support.

CloudWatch metrics

MediaTailor collects overlay ad metrics separately from other ADS metrics. MediaTailor collects these metrics after successfully fetching the ads from the ADS. You don't have to poll the GetTracking API to collect the metrics.

The following table describes CloudWatch metrics for overlay ads:

Metric	Description
AdDecisionServer.OverlayAds	The count of overlay ads included in the ADS responses within the CloudWatch time period that you specified.
AdDecisionServer.OverlayErrors	The number of non-HTTP 200 status code responses, empty responses, and timed-out responses that MediaTailor received from the ADS within the CloudWatch time period that you specified.
AdDecisionServer.OverlayFilled	The number of avails that were successfully filled with at least one overlay ad: 1 - There's at least one valid ad. 0 - Either MediaTailor didn't get any overlay ads, or there was some other failure. SampleCount tracks the number of avails filled. Sum tracks the number of successfully filled overlay avails.
AdDecisionServer.OverlayMinSuggestedDuration	The sum of minSuggestedDuration durations, in milliseconds, of all ads that MediaTailor received from the ADS within the CloudWatch time period that you specified. If minSuggestedDuration isn't specified, the duration shown is the planned duration.
AdDecisionServer.OverlayLatency	The response time, in milliseconds, for requests that MediaTailor makes to the ADS.
AdDecisionServer.OverlayTimeouts	The number of timed-out requests to the ADS in the CloudWatch time period that you specified.
AdsBilled	For more information about ads billed, see Billing.
Avail.*	Because MediaTailor doesn't do any planning for overlay ads, CloudWatch doesn't show any Avail.X metrics.
SkippedReason.*	Because MediaTailor doesn't do any planning for overlay ads, CloudWatch doesn't show any SkippedReason.X metrics.