Feature Flag Observability

[beeme1mr]

Description

Establish stable semantic conventions for feature flag evaluations (evaluations) and changes. Currently, the existing experimental semantic conventions have limitations in uniqueness, context, metric support, and flag change event tracking. This project will address these shortcomings to enhance observability and improve the management of feature flags across various services.

Goals

• Develop a stable semantic convention for feature flag impressions and changes.
• Ensure the conventions support unique identification of feature flags across multiple projects.
• Incorporate context attributes that influence flag evaluations.
• Provide guidance for analyzing metrics related to feature flags.
• Establish a method to track flag change events for effective root cause analysis.
• Create prototypes for at least one client and one server use case.

Non-goals

• Deliver OpenTelemetry instrumentation; this will be addressed via OpenFeature hooks.
• Include baggage or propagation fields for feature flag evaluations in this phase.

Resources

• Announcement blog
• OpenTelemetry Project Charter
• Slack