--- title: RUM Browser Data Collected description: >- Comprehensive guide to RUM Browser SDK event types, attributes, and telemetry data—including sessions, views, resources, errors, and user actions. breadcrumbs: >- Docs > RUM & Session Replay > Application Monitoring > RUM Browser Monitoring > RUM Browser Data Collected --- # RUM Browser Data Collected ## Overview{% #overview %} The RUM Browser SDK generates events that have associated telemetry and attributes. Every RUM event has all of the default attributes, for example, the URL of the page (`view.url`) and user information such as their device type (`device.type`) and their country (`geo.country`). There are additional attributes specific to a given event type. For example, the `view.loading_time` telemetry is associated with view events, and the `resource.method` attribute is associated with resource events. | Event Type | Retention | Description | | ---------- | --------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Session | 30 days | A user session begins when a user starts browsing the web application. It contains high-level information about the user (browser, device, geolocation). It aggregates all RUM events collected during the user journey with a unique `session.id` attribute. **Note:** The session resets after 15 minutes of inactivity. | | View | 30 days | A view event is generated each time a user visits a page of the web application. While the user remains on the same page, resource, long-task, error, and action events are linked to the related RUM view with the `view.id` attribute. | | Resource | 15 days | A resource event is generated for images, XHR, Fetch, CSS, or JS libraries loaded on a web page. It includes detailed loading timing information. | | Long Task | 15 days | A long task event is generated for any task in the browser that blocks the main thread for more than 50ms. | | Error | 30 days | RUM collects every frontend error emitted by the browser. | | Action | 30 days | RUM action events track user interactions during a user journey and can also be manually sent to monitor custom user actions. | The following diagram illustrates the RUM event hierarchy: {% image source="https://docs.dd-static.net/images/real_user_monitoring/data_collected/event-hierarchy.86b26bc249a457cd958cad386d03aabd.png?auto=format" alt="RUM Event hierarchy" /%} ## Default attributes{% #default-attributes %} See a complete list of [standard attributes](https://docs.datadoghq.com/standard-attributes.md?product=browser) for RUM Browser. By default, the attributes are attached to each event type, so you can use them regardless of the RUM event type being queried. ## Event-specific attributes{% #event-specific-attributes %} ### Session timing attributes{% #session-timing-attributes %} | Attribute | Type | Description | | ------------------------- | ----------- | --------------------------------------------------- | | `session.time_spent` | number (ns) | Duration of the user session. | | `session.view.count` | number | Count of all views collected for this session. | | `session.error.count` | number | Count of all errors collected for this session. | | `session.resource.count` | number | Count of all resources collected for this session. | | `session.action.count` | number | Count of all actions collected for this session. | | `session.long_task.count` | number | Count of all long tasks collected for this session. | ### Session attributes{% #session-attributes %} | Attribute name | Type | Description | | ------------------------------------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | `session.id` | string | Randomly generated ID for each session. | | `session.ip` | string | Client IP address. If you want to stop collecting this attribute, change the setting in your [application details](https://docs.datadoghq.com/data_security/real_user_monitoring.md#ip-address). | | `session.is_active` | Boolean | Indicates if the session is currently active. The session ends after 4 hours of activity or 15 minutes of inactivity. | | `session.type` | string | The type of session: `user` or `synthetics`. Sessions from [Synthetic Monitoring Browser Tests](https://docs.datadoghq.com/synthetics/browser_tests.md) are excluded from billing. | | `session.referrer` | string | The URL of the previous web page from which a link to the currently requested page was followed. | | `session.initial_view.id` | string | The ID of the first RUM view generated by the user. | | `session.initial_view.url_host` | string | The host part of the URL. | | `session.initial_view.url_path` | string | The path part of the URL. | | `session.initial_view.url_path_group` | string | The automatic URL group generated for similar URLs (for example, `/dashboard/?` for `/dashboard/123` and `/dashboard/456`). | | `session.initial_view.url_query` | object | The query string parts of the URL decomposed as query params key-value attributes. | | `session.initial_view.url_scheme` | object | The scheme part of the URL. | | `session.last_view.id` | string | The ID of the last RUM view generated by the user. | | `session.last_view.url_host` | string | The host part of the URL. | | `session.last_view.url_path` | string | The path part of the URL. | | `session.last_view.url_path_group` | string | The automatic URL group generated for similar URLs (for example, `/dashboard/?` for `/dashboard/123` and `/dashboard/456`). | | `session.last_view.url_query` | object | The query string parts of the URL decomposed as query params key-value attributes. | | `session.last_view.url_scheme` | object | The scheme part of the URL. | ### View timing attributes{% #view-timing-attributes %} **Note**: View timing telemetry includes time that a page is open in the background. | Attribute | Type | Description | | ------------------------------------------------ | --------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `view.time_spent` | number (ns) | Time spent on the current view. | | `view.first_byte` | number (ns) | Time elapsed until the first byte of the view has been received. | | `view.largest_contentful_paint` | number (ns) | Time in the page load where the largest DOM object in the viewport (visible on screen) is rendered. | | `view.largest_contentful_paint_target_selector` | string (CSS selector) | CSS Selector of the element corresponding to the largest contentful paint. | | `view.first_input_delay` | number (ns) | Time elapsed between a user's first interaction with the page and the browser's response. | | `view.first_input_delay_target_selector` | string (CSS selector) | CSS selector of the first element the user interacted with. | | `view.interaction_to_next_paint` | number (ns) | Longest duration between a user's interaction with the page and the next paint. | | `view.interaction_to_next_paint_target_selector` | string (CSS selector) | CSS selector of the element associated with the longest interaction to the next paint. | | `view.cumulative_layout_shift` | number | Quantifies unexpected page movement due to dynamically loaded content (for example, third-party ads) where `0` means that no shifts are happening. | | `view.cumulative_layout_shift_target_selector` | string (CSS selector) | CSS selector of the most shifted element contributing to the page CLS. | | `view.loading_time` | number (ns) | Time until the page is ready and no network request or DOM mutation is currently occurring. [More info from Monitoring Page Performance](https://docs.datadoghq.com/real_user_monitoring/application_monitoring/browser/monitoring_page_performance.md#how-loading-time-is-calculated). | | `view.first_contentful_paint` | number (ns) | Time when the browser first renders any text, image (including background images), non-white canvas, or SVG. For more information about browser rendering, see the [w3c definition](https://www.w3.org/TR/paint-timing/#sec-terminology). | | `view.dom_interactive` | number (ns) | Time until the parser finishes its work on the main document. [More info from the MDN documentation](https://developer.mozilla.org/en-US/docs/Web/API/PerformanceTiming/domInteractive). | | `view.dom_content_loaded` | number (ns) | Time until the load event is fired and the initial HTML document is completely loaded and parsed, without waiting for non-render blocking stylesheets, images, and subframes to finish loading. [More info from the MDN documentation](https://developer.mozilla.org/en-US/docs/Web/API/Document/DOMContentLoaded_event). | | `view.dom_complete` | number (ns) | Time until the page and all of the subresources are ready. The loading spinner has stopped spinning for the user. [More info from the MDN documentation](https://developer.mozilla.org/en-US/docs/Web/API/Window/DOMContentLoaded_event). | | `view.load_event` | number (ns) | Time until the load event is fired, indicating the page is fully loaded. Usually a trigger for additional application logic. [More info from the MDN documentation](https://developer.mozilla.org/en-US/docs/Web/API/Window/load_event). | | `view.error.count` | number | Count of all errors collected for this view. | | `view.long_task.count` | number | Count of all long tasks collected for this view. | | `view.resource.count` | number | Count of all resources collected for this view. | | `view.action.count` | number | Count of all actions collected for this view. | ### Resource timing attributes{% #resource-timing-attributes %} Detailed network timing data for the loading of an application's resources are collected with the [Performance Resource Timing API](https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming). | Attribute | Type | Description | | ------------------------------ | -------------- | --------------------------------------------------------------------------------------------------------------------------------------------- | | `resource.duration` | number | Entire time spent loading the resource. | | `resource.size` | number (bytes) | Resource size. | | `resource.connect.duration` | number (ns) | Time spent establishing a connection to the server (connectEnd - connectStart). | | `resource.ssl.duration` | number (ns) | Time spent for the TLS handshake. If the last request is not over HTTPS, this attribute does not appear (connectEnd - secureConnectionStart). | | `resource.dns.duration` | number (ns) | Time spent resolving the DNS name of the last request (domainLookupEnd - domainLookupStart). | | `resource.redirect.duration` | number (ns) | Time spent on subsequent HTTP requests (redirectEnd - redirectStart). | | `resource.first_byte.duration` | number (ns) | Time spent waiting for the first byte of response to be received (responseStart - RequestStart). | | `resource.download.duration` | number (ns) | Time spent downloading the response (responseEnd - responseStart). | ### Resource attributes{% #resource-attributes %} | Attribute | Type | Description | | -------------------------- | ------ | ---------------------------------------------------------------------------------------------------- | | `resource.type` | string | The type of resource being collected (for example, `css`, `javascript`, `media`, `XHR`, or `image`). | | `resource.method` | string | The HTTP method (for example `POST` or `GET`). | | `resource.status_code` | number | The response status code (available for fetch/XHR resources only). | | `resource.url` | string | The resource URL. | | `resource.url_host` | string | The host part of the URL. | | `resource.url_path` | string | The path part of the URL. | | `resource.url_query` | object | The query string parts of the URL decomposed as query params key-value attributes. | | `resource.url_scheme` | string | The protocol name of the URL (HTTP or HTTPS). | | `resource.provider.name` | string | The resource provider name. Default is `unknown`. | | `resource.provider.domain` | string | The resource provider domain. | | `resource.provider.type` | string | The resource provider type (for example, `first-party`, `cdn`, `ad`, or `analytics`). | ### GraphQL attributes{% #graphql-attributes %} For GraphQL requests configured in `allowedGraphQlUrls`, additional metadata is automatically collected. See [Track GraphQL requests](https://docs.datadoghq.com/real_user_monitoring/application_monitoring/browser/monitoring_resource_performance.md#track-graphql-requests) for configuration details. | Attribute | Type | Description | | --------------------------------- | ------ | ----------------------------------------------------------------------------------------------------------------------------- | | `resource.graphql.operation_type` | string | The GraphQL operation type: `query`, `mutation`, or `subscription`. | | `resource.graphql.operation_name` | string | The GraphQL operation name, if provided in the request. | | `resource.graphql.variables` | string | The GraphQL variables sent with the request. | | `resource.graphql.payload` | string | The GraphQL query (limited to 32 KB, available only if `trackPayload` is enabled). | | `resource.graphql.errors_count` | number | Number of errors returned in the GraphQL response (available only if `trackResponseErrors` is enabled). | | `resource.graphql.errors` | array | Array of GraphQL errors with `message`, `code`, `locations`, and `path` (available only if `trackResponseErrors` is enabled). | ### Long task timing attributes{% #long-task-timing-attributes %} | Attribute | Type | Description | | -------------------- | ------ | -------------------------- | | `long_task.duration` | number | Duration of the long task. | ### Error attributes{% #error-attributes %} | Attribute | Type | Description | | --------------- | ------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `error.source` | string | Where the error originates from (for example, `console`). See [Error sources](https://docs.datadoghq.com/real_user_monitoring/application_monitoring/browser/collecting_browser_errors.md#error-sources). | | `error.type` | string | The error type (or error code in some cases). | | `error.message` | string | A concise, human-readable, one-line message explaining the event. | | `error.stack` | string | The stack trace or complementary information about the error. | #### Source errors{% #source-errors %} Source errors include code-level information about the error. For more information about different error types, see the [MDN documentation](https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming). | Attribute | Type | Description | | ------------ | ------ | --------------------------------------------- | | `error.type` | string | The error type (or error code in some cases). | ### Action timing attributes{% #action-timing-attributes %} | Attribute | Type | Description | | ------------------------ | ----------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `action.loading_time` | number (ns) | The loading time of the action. See how it is calculated in the [Tracking User Actions documentation](https://docs.datadoghq.com/real_user_monitoring/application_monitoring/browser/tracking_user_actions.md?tab=npm#action-timing-telemetry). | | `action.long_task.count` | number | Count of all long tasks collected for this action. | | `action.resource.count` | number | Count of all resources collected for this action. | | `action.error.count` | number | Count of all errors collected for this action. | ### Action attributes{% #action-attributes %} | Attribute | Type | Description | | -------------------- | ------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `action.id` | string | UUID of the user action. | | `action.type` | string | Type of the user action. For [Custom User Actions](https://docs.datadoghq.com/real_user_monitoring/application_monitoring/browser/tracking_user_actions.md?tab=npm#custom-actions), it is set to `custom`. | | `action.target.name` | string | Element that the user interacted with. Only for automatically collected actions. | | `action.name` | string | User-friendly name created (for example, `Click on #checkout`). For [Custom User Actions](https://docs.datadoghq.com/real_user_monitoring/application_monitoring/browser/tracking_user_actions.md?tab=npm#custom-actions), the action name given in the API call. | ### Frustration signals fields{% #frustration-signals-fields %} | Field | Type | Description | | ------------------------------------- | ------ | ------------------------------------------------------------- | | `session.frustration.count` | number | Count of all frustration signals associated with one session. | | `view.frustration.count` | number | Count of all frustration signals associated with one view. | | `action.frustration.type:dead_click` | string | The dead clicks detected by the RUM Browser SDK. | | `action.frustration.type:rage_click` | string | The rage clicks detected by the RUM Browser SDK. | | `action.frustration.type:error_click` | string | The error clicks detected by the RUM Browser SDK. | ### UTM attributes{% #utm-attributes %} | Field | Type | Description | | ----------------------------- | ------ | ----------------------------------------------------------------------------------------------------- | | `view.url_query.utm_source` | string | The parameter in the URL tracking the source of traffic. | | `view.url_query.utm_medium` | string | The parameter in the URL tracking the channel where the traffic is coming from. | | `view.url_query.utm_campaign` | string | The parameter in the URL identifying the specific marketing campaign tied to that view. | | `view.url_query.utm_content` | string | The parameter in the URL identifying the specific element a user clicked within a marketing campaign. | | `view.url_query.utm_term` | string | The parameter in the URL tracking the keyword a user searched to trigger a given campaign. | ## Further reading{% #further-reading %} - [Introducing Datadog Real User Monitoring](https://www.datadoghq.com/blog/real-user-monitoring-with-datadog/) - [Modifying RUM data and adding context](https://docs.datadoghq.com/real_user_monitoring/application_monitoring/browser/advanced_configuration.md) - [Explore your views within Datadog](https://docs.datadoghq.com/real_user_monitoring/explorer.md) - [Apply visualizations on your events](https://docs.datadoghq.com/real_user_monitoring/explorer/visualize.md) - [Datadog standard attributes](https://docs.datadoghq.com/logs/log_configuration/attributes_naming_convention.md) {% image source="https://docs.dd-static.net/images/real_user_monitoring/data_collected/event-hierarchy.86b26bc249a457cd958cad386d03aabd.png?auto=format&fit=max&w=850 1x, https://docs.dd-static.net/images/real_user_monitoring/data_collected/event-hierarchy.86b26bc249a457cd958cad386d03aabd.png?auto=format&fit=max&w=850&dpr=2 2x" alt="" /%}