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Loyalty Rewards Pipeline with Late Bank Data
A medium Pipeline Design interview practice problem on DataDriven. Write and execute real pipeline design code with instant grading.
- Domain
- Pipeline Design
- Difficulty
- medium
- Seniority
- senior
Problem
Our loyalty app links to users' bank accounts and credits reward points when they make purchases at partner brands. The problem is that bank data from our aggregators arrives 12 to 48 hours after the actual transaction, and by that time an offer may have expired or the user may have already redeemed that offer slot. We're also seeing duplicate transactions from aggregator bugs causing users to be double-credited. Design a pipeline that handles the late data problem and guarantees we never credit points twice for the same purchase.
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