Segments Reference

This section provides technical specifications and reference information for Confidence Segments.

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Segment States

Segments have three lifecycle states: You must allocate a segment before using it in a flag rule.

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Targeting Criteria

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Expression Operators

Supported expression operators:

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Attribute Value Types

Available value types:

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Match Operators

• Equality (eqRule): Match exact value
• Set (setRule): Match any value from a set
• Range (rangeRule): Match values within a range (supports inclusive/exclusive bounds and open-ended ranges)

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Coordination

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Common Coordination Patterns

1. Mutual exclusion: All experiments in a feature area exclude each other using the same tag Use exclusivityTags: ["homepage"] and exclusiveTo: ["homepage"]
2. Hierarchical coordination: Specific experiments exclude from broader categories
   • Specific: exclusivityTags: ["ranking-v2"] and exclusiveTo: ["ranking-v2", "all-experiments"]
   • Broad: exclusivityTags: ["all-experiments"] and exclusiveTo: ["all-experiments"]
3. Cross-feature coordination: Related features that shouldn’t run simultaneously
   • Search: exclusivityTags: ["search"] and exclusiveTo: ["search", "ui-changes"]
   • UI: exclusivityTags: ["ui-changes"] and exclusiveTo: ["search", "ui-changes"]

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Best Practices

• Use descriptive tag names that clearly indicate the feature or experiment type
• Plan coordination strategy before creating segments
• Monitor allocation space within each coordination group
• Archive completed experiments to free up space
• Document which tags represent which feature areas