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[AI-FSSDK] (DO NOT REVIEW) [FSSDK-12262] Exclude CMAB from UserProfileService#19

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[AI-FSSDK] (DO NOT REVIEW) [FSSDK-12262] Exclude CMAB from UserProfileService#19
jaeopt wants to merge 1 commit intomasterfrom
ai/jaeopt/FSSDK-12262-cmab-ups-5

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@jaeopt jaeopt commented Feb 19, 2026

Summary

CMAB experiments should not use UserProfileService (UPS) for sticky bucketing because UPS maintains decisions across the experiment lifetime without considering TTL or user attributes, which contradicts CMAB's dynamic nature. This change excludes CMAB experiments from UPS lookup and save operations.

Changes

  • Skip UPS stored variation lookup for CMAB experiments to ensure decisions are always computed dynamically
  • Skip UPS variation save for CMAB experiments to prevent caching dynamic decisions
  • Add decision reason logging when UPS is excluded for CMAB experiments

Jira Ticket

FSSDK-12262

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