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Background
We need to sync Kakao channel subscription status for users in our e-commerce platform’s M2 system.
Current Plan
- Long-term: Implement callback integration for real-time subscription status updates
- Immediate need: One-time bulk update for existing users
Key Challenge
Need to determine the most efficient method to perform bulk update of Kakao subscription status for approximately 800,000 users in M2 system.
What would be the most efficient and reliable method to accomplish this bulk update?