--- schema_version: "1" id: b7c1b3320a93c0cf49dd3e6f427273ea6a0152ae77a9f997528607bcd83179a8 title: Lightning Performance Event Type collection: legacydeveloper version: current locale: en-us portal_url: https://docs.salesforce.com/legacydeveloper/current/en-us/object_reference/sforce_api_objects_eventlogfile_lightningperformance.md canonical_url: https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/sforce_api_objects_eventlogfile_lightningperformance.htm source_site: developer.salesforce.com content_type: documentation content_hash: cafb4753fccc6fd8cd212ddce90103c22d36d7aae4897963672140e9076cb2b9 description: Lightning Performance events track trends in Lightning Experience and Salesforce mobile app performance. This event type is available in the EventLogFile object in API version 39.0 and later. --- # Lightning Performance Event Type Lightning Performance events track trends in Lightning Experience and Salesforce mobile app performance. This event type is available in the EventLogFile object in API version 39.0 and later. For details about event monitoring, see the [Trailhead Event Monitoring module](https://trailhead.salesforce.com/en/modules/event_monitoring/units/event_monitoring_intro "HTML (New Window)") or [REST API Developer’s Guide](https://developer.salesforce.com/docs/atlas.en-us.264.0.api_rest.meta/api_rest/using_resources_event_log_files.htm "HTML (New Window)"). ![Note](https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/images/icon_note.png) #### Note Event Monitoring logs are a source of truth but are not durable. Data loss can occur during Salesforce site switches, instance refreshes, or unplanned outages. For more information, see [Using Event Monitoring](https://developer.salesforce.com/docs/atlas.en-us.264.0.api_rest.meta/api_rest/using_resources_event_log_files.htm "HTML (New Window)"). ## Fields | Field | Details | | --- | --- | | APP\_NAME | Type String Description The name of the application that the user accessed. | | BROWSER\_NAME | Type String Description The name of the browser that the user accessed. Example Chrome, Safari | | BROWSER\_VERSION | Type String Description The version of the browser that the user accessed in major.minor version format. Some browsers don’t provide a minor version. | | CLIENT\_GEO | Type String Description The geolocation of the client in the form of /. Example United States/California | | CLIENT\_ID | Type String Description The API client ID. | | CLIENT\_IP | Type String Description The IP address of the client that’s using Salesforce services. A Salesforce internal IP (such as a login from AppExchange) is shown as “Salesforce.com IP”. For example: 96.43.144.26. | | CONNECTION\_TYPE | Type String Description The type of connection. Possible Values - CDMA1x - CDMA - EDGE - EVDO0 - EVDOA - EVDOB - GPRS - HRPD - HSDPA - HSUPA - LTE - WIFI | | DEVICE\_ID | Type String Description The unique identifier used to identify a device when tracking events. DEVICE\_ID is a generated value that’s created when the mobile app is initially run after installation. | | DEVICE\_MODEL | Type String Description The name of the device model. Example iPad, iPhone | | DEVICE\_PLATFORM | Type String Description The type of application experience in name:experience:form format. Possible Values - name: APP\_BUILDER, CUSTOM, S1, SFX - experience: BROWSER, HYBRID - form: DESKTOP, PHONE, TABLET | | DEVICE\_SESSION\_ID | Type Id Description The unique identifier of the user’s session based on page load time. When the user reloads a page, a new session is started. Example 321a1ddfaf924803a075f1e69fc87bc06f53ccd0 | | DURATION | Type Number Description The duration in milliseconds since the page start time. | | EVENT\_TYPE | Type String Description The type of event. The value is always LightningPerformance. | | LOGIN\_KEY | Type String Description The string that ties together all events in a user’s login session. It starts with a login event and ends with either a logout event or the user session expiring. Example GeJCsym5eyvtEK2I | | ORGANIZATION\_ID | Type String Description The 15-character ID of the org. Example 00D000000000123 | | OS\_NAME | Type String Description The operating system name, derived from USER\_AGENT. Example Android, iOS, OSX, Windows | | OS\_VERSION | Type String Description The operating system version, derived from USER\_AGENT. | | PAGE\_START\_TIME | Type Number Description The time when the page was initially loaded, measured in milliseconds. Example 1471564788642 | | REQUEST\_ID | Type String Description The unique ID of a single transaction. A transaction can contain one or more events. Each event in a given transaction has the same REQUEST\_ID. Example 3nWgxWbDKWWDIk0FKfF5DV | | SDK\_APP\_TYPE | Type String Description The mobile SDK application type. Possible Values - HYBRID - HYBRIDLOCAL - HYBRIDREMOTE - NATIVE - REACTNATIVE | | SDK\_APP\_VERSION | Type String Description The mobile SDK application version number. Example 5.0 | | SDK\_VERSION | Type String Description The mobile SDK version number. Example 2.1.0 | | SESSION\_KEY | Type String Description The user’s unique session ID. You can use this value to identify all events in Lightning Experience within a session. When the user logs out and logs in again, a new session is started. Example cdd09305cb6babf34059e27f70e47f1b11dec868 | | TIMESTAMP | Type String Description The access time of Salesforce services in GMT. Example 20130715233322.670 | | TIMESTAMP\_DERIVED | Type DateTime Description The access time of Salesforce services in ISO8601-compatible format (YYYY-MM-DDTHH:MM:SS.sssZ). Example 2015-07-27T11:32:59.555Z. The timezone is GMT. | | UI\_EVENT\_ID | Type String Description Id of the Lightning event type. Possible Values - ltng:error - ltng:interaction - ltng:pageView - ltng:performance ![Note](https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/images/icon_note.png) #### Note Any other value, such as ltng:bootstrap, is for internal usage only. | | UI\_EVENT\_SOURCE | Type String Description The user action on the record or records. This field’s value indicates whether the user’s action was on a single record or multiple records. For example, read indicates that one record was read (such as on a record detail page); reads indicates that multiple records were read (such as in a list view). Example - click - create - delete - hover - read - update | | UI\_EVENT\_TIMESTAMP | Type Number Description The time at which this event occurred, measured in milliseconds. Example 1479769912796 | | UI\_EVENT\_TYPE | Type String Description The type of performance event. Example bootstrap, defs, performance | | USER\_AGENT | Type String Description The numeric code for the type of client used to make the request (for example, browser, application, or API) as a string. | | USER\_ID | Type String Description The 15-character ID of the user accessing Salesforce services through the UI or API. Example 00530000009M943 | | USER\_ID\_DERIVED | Type Id Description The 18-character case-insensitive ID of the user who’s using Salesforce services through the UI or the API. Example 00590000000I1SNIA0 | | USER\_TYPE | Type String Description The category of user license of the user accessing Salesforce services through the UI or API. Possible Values - A: Automated Process - b: High Volume Portal - C: Customer Portal User - D: External Who - F: Self Service - G: Guest - L: Package License Manager - N: Salesforce to Salesforce - n: CSN Only - O: Power Custom - o: Custom - P: Partner - p: Customer Portal Manager - S: Standard - X: Salesforce Administrator | #### See Also - [EventLogFile Supported Event Types](https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/sforce_api_objects_eventlogfile_supportedeventtypes.htm "The EventType field in the EventLogFile object supports these events. Some common fields, such as CPU_TIME and RUN_TIME, can have null or zero values depending on how the events are generated for a given feature. Sometimes, three quotation marks appear around event data containing special characters in the CSV file. The third quotation mark is necessary for tools and applications to parse the field data at the correct field value boundary.") - [EventLogFile](https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/sforce_api_objects_eventlogfile.htm "Represents event log files generated by Event Monitoring. Use event log file data to analyze usage trends and user behavior in your Salesforce org. This object is available in API version 32.0 and later. The Interval and Sequence fields are available only in API version 37.0 and later.")