REST API Service
Contract-first API design with consistent responses and validation control points.
Architecture
Operational Metrics
| Metric | Observed Value | Target |
|---|---|---|
| Validation rejection accuracy | 99.4% | > 99% |
| p95 API response time | 28 ms | < 40 ms |
| Error response consistency | 100% | 100% |
Key Decisions
- Standardized JSON error envelope for all endpoints.
- Validation runs before business logic and storage interaction.
- Added request correlation ids for faster incident debugging.