Trace telemetry: Application Insights data model

Trace telemetry in Application Insights represents printf-style trace statements that are text searched. Log4Net, NLog, and other text-based log file entries are translated into instances of this type. The trace doesn't have measurements as an extensibility.

Message

Trace message.

Maximum length: 32,768 characters

Severity level

Trace severity level.

Values: Verbose, Information, Warning, Error, and Critical

Custom properties

Name-value collection of custom properties: This collection is used to extend standard telemetry with the custom dimensions. Examples are the deployment slot that produced telemetry or the telemetry-item specific property like the order number.

• Maximum key length: 150
• Maximum value length: 8,192

Next steps

• Explore .NET trace logs in Application Insights.
• Explore Java trace logs in Application Insights.
• See data model for Application Insights types and data model.
• Write custom trace telemetry.
• Check out platforms supported by Application Insights.