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Send web performance alerts based on RUM data

Generating alerts for changes in visitor experience helps you maintain a good user experience and pass Google Core Web Vitals scores.

You can set up budgets with custom alert criteria and report breaches to different notification channels.

Set up RUM budgets​

You can configure budget thresholds for your RUM data here: Project > RUM > Settings > Alerts & Budgets.

The dashboard lists all existing budgets and their current status.

RUM budget list

Click on "Create Budget" to set up new checks. Each budget has the following configuration options:

  • Budget Name
  • Check Every: how often the RUM data is checked for breaches
  • Consistent Breach: whether to fail the budget right away or only after multiple consecutive breaches
  • Page View Filter: only check the budget for a specific subset of your data (for example a specific page URL or browser)
  • Budget Condition: what metric and change threshold to apply.

Editing a DebugBear budget

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The check frequency also determines the duration of the data window that is checked. For example, when checking if a value has increased by a certain amount, the last 4 hours of data might be compared to the preceding 4 hours of data.

For relative changes DebugBear looks at a baseline window of up to 5 periods to reduce the impact of outliers.

Viewing budget history​

After creating a budget you can click on the item in the table to see how the metric has changed over time and when breaches occurred:

  • The green background indicates the value range that would count as passing at each point in time
  • Orange dots indicate that the budget was breached for the period
  • Red dots indicate that the budget was breached consistently (if configured in the budget)

RUM alert chart

Alerting channels​

You can send RUM data alerts through the following channels:

How to set up an alerting channel​

Every project has RUM email alerts pre-configured.

Follow these steps to set up Slack or Teams alerts:

  1. Select Integrations in the sidebar
  2. Add Slack or Teams integration
  3. Select the RUM Alerts alert type during setup

Setting up RUM alerts

Configure alerting​

Use RUM budgets to configure your alerts.

DebugBear also has a set of default alert thresholds that will be used automatically to alert you to major changes on key pages on your website.

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The legacy integration-specific alerts are still applied. They will eventually be migrated to the new RUM budget system.

RUM Alert example​

A Slack message for a real user monitoring alert looks like this:

Slack RUM alert message

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