Overview
In application development, limiting the number of times a user can claim rewards or perform specific actions per day (e.g., “claim points 3 times a day”) is a common requirement. Momen offers two distinct implementation paths.
Method Comparison
| Dimension | Method 1: Unique Constraint | Method 2: State Counter |
|---|---|---|
| Design Approach | Append‑only: each claim creates a new row | State‑based: each user has a fixed record row, updated on each claim |
| Concurrency Defense | Database unique index | Update node filter (daily_claim_count < 3) |
| Data Volume | Grows linearly with claims over time | Grows with the number of active users |
| Audit Traceability | Built‑in (each claim is a row) | Requires additional configuration (database trigger) |
| Best For | High‑value rewards, strict audit requirements | Lightweight daily tasks, check‑in counters |
Method Details
Click the cards below to view the full implementation steps:
How to Choose
- Choose Unique Constraint if your application handles valuable assets (points, coupons, physical rewards) that require strict audit trails and database‑level concurrency guarantees.
- Choose State Counter if your logic is lightweight (daily task counters, check‑in counts) and you want to minimize storage growth, or if you prefer a simpler query pattern.
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