The RUM Browser SDK generates events with associated metrics and attributes. Each RUM event has all default attributes, such as the page URL (view_url) and user information like device type (device_type) and country (geo_country).
There are also additional metrics and attributes specific to a given event type. For example, the view_loading_time metric is associated with view events, while the resource_method attribute is associated with resource events.
Event Types
| 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 using a unique session_id attribute |
| View | 30 days | A view event is generated each time a user visits a page of the web application. While the user stays on the same page, resource, long task, error, and action events are linked to the related RUM view using the view_id attribute |
| Resource | 15 days | Resource events are generated for images, XHR, Fetch, CSS, or JS libraries loaded on a webpage. They include detailed loading time information |
| Long Task | 15 days | Long task events are generated for any task in the browser that blocks the main thread for more than 50 milliseconds |
| Error | 30 days | RUM collects every frontend error emitted by the browser |
| Action | 30 days | RUM action events track user interactions during the user journey and can also be manually sent to monitor custom user actions |
Sessions are reset after 15 minutes of inactivity.
Event Hierarchy
Default Attributes
All RUM events contain the following default attributes:
| Attribute | Type | Description |
|---|
date | integer | Event timestamp in milliseconds |
type | string | Event type (e.g., session, view, resource, error, action) |
service | string | Service name that generated this event |
application_id | string | Application ID that generated this event |
session_id | string | Session ID |
view_id | string | View ID |
action_id | string | User action ID |
context | object | User-defined context |
Event-Specific Metrics and Attributes
Session
View
Resource
Long Task
Error
Action
Session Metrics
| Metric | Type | Description |
|---|
session_duration | number | Session duration in milliseconds |
session_view_count | number | Number of views in the session |
session_action_count | number | Number of user actions in the session |
session_error_count | number | Number of errors in the session |
session_resource_count | number | Number of resources in the session |
session_long_task_count | number | Number of long tasks in the session |
Session Attributes
| Attribute | Type | Description |
|---|
session_type | string | Session type (e.g., user, synthetic) |
session_has_replay | boolean | Whether session replay is enabled |
session_is_active | boolean | Whether the session is active |
session_initial_view_id | string | Initial view ID |
session_initial_view_url | string | Initial view URL |
session_initial_view_referrer | string | Referrer URL of the initial view |
View Metrics
| Metric | Type | Description |
|---|
view_loading_time | number | View loading time in milliseconds |
view_first_contentful_paint | number | First contentful paint time in milliseconds |
view_dom_interactive | number | DOM interactive time in milliseconds |
view_dom_complete | number | DOM complete time in milliseconds |
view_load_event_end | number | Load event end time in milliseconds |
view_error_count | number | Number of errors in the view |
view_resource_count | number | Number of resources in the view |
view_long_task_count | number | Number of long tasks in the view |
view_action_count | number | Number of user actions in the view |
View Attributes
| Attribute | Type | Description |
|---|
view_url | string | View URL |
view_referrer | string | Referrer URL of the view |
view_name | string | View name |
Resource Metrics
| Metric | Type | Description |
|---|
resource_duration | number | Resource loading time in milliseconds |
resource_size | number | Resource size in bytes |
resource_connect_duration | number | Connection time in milliseconds |
resource_ssl_duration | number | SSL handshake time in milliseconds |
resource_dns_duration | number | DNS lookup time in milliseconds |
resource_first_byte_duration | number | Time to first byte in milliseconds |
resource_download_duration | number | Download time in milliseconds |
Resource Attributes
| Attribute | Type | Description |
|---|
resource_type | string | Resource type (xhr, fetch, document, script, css, image, font, media, other) |
resource_method | string | HTTP method (e.g., GET, POST) |
resource_status_code | number | HTTP status code |
resource_url | string | Resource URL |
resource_provider_name | string | Resource provider name |
resource_provider_domain | string | Resource provider domain |
resource_provider_type | string | Resource provider type (first-party, third-party) |
Long Task Metrics
| Metric | Type | Description |
|---|
long_task_duration | number | Long task duration in milliseconds |
Error Metrics
| Metric | Type | Description |
|---|
error_count | number | Number of errors |
Error Attributes
| Attribute | Type | Description |
|---|
error_source | string | Error source (console, network, source, logger, agent, custom) |
error_type | string | Error type |
error_message | string | Error message |
error_stack | string | Error stack trace |
User Action Metrics
| Metric | Type | Description |
|---|
action_loading_time | number | User action loading time in milliseconds |
action_long_task_count | number | Number of long tasks in the user action |
action_resource_count | number | Number of resources in the user action |
action_error_count | number | Number of errors in the user action |
User Action Attributes
| Attribute | Type | Description |
|---|
action_id | string | User action ID |
action_type | string | User action type (e.g., click, custom) |
action_target_name | string | User action target name |
action_name | string | User action name |
