Lab 10 • Backend & API Architecture
API & Full-Stack Flow Designer
Design and verify an idempotent course enrollment endpoint against a fictional record store. Map role permissions, required fields and HTTP status codes deterministically.
Auth Check (401)
PENDING
Missing Field (400)
PENDING
Success Enroll (201)
PENDING
Idempotent Dup (409)
PENDING
Simulated Request Builder
Schema Form — Required Fields
Role Permission Matrix — Can Enroll?
UI-to-API Feature Flow
Request LifecycleUI Action
UI ActionAuth CheckField ValidationDuplicate CheckRecord Store WriteResponse
Synthetic Enrollment Record Store (1)
| enrollmentId | courseId | learnerEmail |
|---|---|---|
| enr_seed1 | crs_intro_101 | bob@example.com |
Response Log (0 calls)
Dispatch a request to inspect the simulated HTTP response.
Status Code Distribution
0Calls
History step 0
1. Validity
Inputs Supported
All configuration parameters are valid.
2. Correctness
Objective: Demonstrated
Ready for verification run
3. Constraints
Within Limits
Budget, SLA, and capacity limits respected.
4. Trade-offs
Analysis
Inspect scenario parameters to evaluate trade-offs.