Real User Monitoring Monitor

Real User Monitoring Monitor


Once Real User Monitoring is enabled for your organization, you can create a RUM monitor to alert you when a specified type of RUM event exceeds a user-defined threshold over a given period of time.

Monitor creation

To create a RUM monitor in Datadog, use the main navigation: Monitors –> New Monitor –> Real User Monitoring.

Note: There is a default limit of 1000 RUM monitors per account. Contact Support to lift this limit for your account.

Define the search query

As you define the search query, the graph above the search fields updates.

  1. Construct a search query using the same logic as a RUM explorer search.
  2. Choose to monitor over a RUM event count, facet, or measure:
    • Monitor over a RUM event count: Use the search bar (optional) and do not select a facet or measure. Datadog evaluates the number of RUM events over a selected time frame, then compares it to the threshold conditions.
    • Monitor over a facet: If a facet is selected, the monitor alerts over the Unique value count of the facet.
    • Monitor over measure: If a measure is selected, the monitor alerts over the numerical value of the RUM facet (similar to a metric monitor) and aggregation needs to be selected (min, avg, sum, median, pc75, pc90, pc95, pc98, pc99, or max).
  3. Group RUM events by multiple dimensions (optional): All RUM events matching the query are aggregated into groups based on the value of up to four facets.
  4. Configure the alerting grouping strategy (optional):
    • Simple alert: Simple alerts aggregate over all reporting sources. You receive one alert when the aggregated value meets the set conditions.
      If the query has a group by and you select simple-Alert mode, you get one alert when one or multiple groups values breach the threshold. This strategy may be selected to reduce notification noise.
    • Multi alert: Multi alerts apply the alert to each source according to your group parameters. An alerting event is generated for each group that meets the set conditions. For example, you could group a query by to receive a separate alert for each browser when the number of errors is high.

Set alert conditions

  • Trigger when the metric is above, above or equal to, below, or below or equal to
  • the threshold during the last 5 minutes, 15 minutes, 1 hour, etc. or custom to set a value between 5 minutes and 48 hours.
  • Alert threshold <NUMBER>
  • Warning threshold <NUMBER>

No data and below alerts

To receive a notification when an application has stopped sending RUM events, set the condition to below 1. This notifies when no RUM events match the monitor query in a given timeframe across all aggregate groups.

When splitting the monitor by any dimension (tag or facet) and using a below condition, the alert is triggered if and only if there are RUM events for a given group, and the count is below the threshold—or if there are no RUM events for all of the groups.


  • This monitor triggers if and only if there are no RUM events for all applications:
  • This monitor triggers if there are no logs for the application

Advanced alert conditions

For detailed instructions on the advanced alert options (evaluation delay, etc.), see the Monitor configuration page.


For detailed instructions on the Say what’s happening and Notify your team sections, see the Notifications page.

Further Reading