RUM Browser Data Collected

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Overview

The RUM Browser SDK generates events that have associated metrics 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 metrics and attributes specific to a given event type. For example, the view.loading_time metric 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, geo-location). 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 webpage. 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:

Default attributes

See a complete list of Standard Attributes 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 metrics and attributes

Session metrics

Metric	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

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.
`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 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 metrics

Note: View timing metrics include 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.
`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.
`view.dom_interactive`	number (ns)	Time until the parser finishes its work on the main document. More info from the MDN documentation.
`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.
`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.
`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.
`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 metrics

Detailed network timing data for the loading of an application’s resources are collected with the Performance Resource Timing API.

Metric	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 metric 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

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`).

Long task timing metrics

Metric	Type	Description
`long_task.duration`	number	Duration of the long task.

Error attributes

Attribute	Type	Description
`error.source`	string	Where the error originates from (for example, `console`). See 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 include code-level information about the error. For more information about different error types, see the MDN documentation.

Attribute	Type	Description
`error.type`	string	The error type (or error code in some cases).

Action timing metrics

Metric	Type	Description
`action.loading_time`	number (ns)	The loading time of the action. See how it is calculated in the Tracking User Actions documentation.
`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

Attribute	Type	Description
`action.id`	string	UUID of the user action.
`action.type`	string	Type of the user action. For Custom User 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, the action name given in the API call.

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

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 paramter in the URL identifying the specific marketing campaign tied to that view.
`view.url_query.utm_content`	string	The paramter 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.