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TDD: Walk-in UPI QR Pay — final technical design document
After BRD + design review are locked, produce the formal technical design doc covering:
- Sequence diagram (customer → Razorpay → backend → OCPP → charger)
- Data model changes (schema migration text)
- API contracts (webhook handler, admin QR provisioning, guest-mode read endpoints)
- Idempotency + concurrency model
- Failure/retry semantics (webhook re-fires, gun offline, RemoteStart rejected, refund flow)
- SMS content + provider integration details
- Observability (metrics + logs to add)
- Test plan (unit + integration + one live pilot station)
- Rollout / rollback plan
- Estimated effort per phase
Commit finalized TDD to docs/TDD-walkin-qr.md in the backend repo. Only after this ships do we start implementation items.</body>
Vajra Volt Mobile App
· vajra-mobile-app
· by saravanan@scrumclaw.ai
8d ago
07-31 03:24
07-31 03:24