- C# 99.5%
- Dockerfile 0.5%
Abdulrazaq Alhendi
bd6ad3011a
- Optimized loan queries by batching and locking rows for touched loans in payment uploads. - Added logic to automatically close loans when total payments cover the full schedule. - Introduced validation to reject future-dated payments. - Extended tests to cover early loan closures, concurrent uploads, and edge cases. - Updated ADRs and architecture documentation to reflect new payment and closure behavior. |
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| docker/postgres | ||
| docs | ||
| src | ||
| tests | ||
| .dockerignore | ||
| .gitattributes | ||
| .gitignore | ||
| compose.yaml | ||
| global.json | ||
| peaceful-urchin.sln | ||
| README.md | ||
| task.md | ||
| TODO.md | ||
Peaceful Urchin
A loan and credit microservices task using .NET and PostgreSQL. The task defines the required behavior and deliverables. The architecture guide shows the services and the domain terms they use.
Run locally
Install Docker with Compose. No local .NET SDK is needed. From the repository root, start the three APIs and PostgreSQL:
docker compose up --build --detach --wait
One PostgreSQL container hosts separate access_db, lending_db, and credit_db databases. The Compose stack runs the APIs in Development so their OpenAPI documents are available:
| Service | OpenAPI document | Liveness |
|---|---|---|
| Access | http://127.0.0.1:8081/openapi/v1.json | http://127.0.0.1:8081/health/live |
| Lending | http://127.0.0.1:8082/openapi/v1.json | http://127.0.0.1:8082/health/live |
| Credit | http://127.0.0.1:8083/openapi/v1.json | http://127.0.0.1:8083/health/live |
The OpenAPI documents are JSON, with no separate UI. The APIs expose them only in Development.
Demo users
| Institution | Username | Password |
|---|---|---|
| Bank A | bank@example.test |
bank-local |
| CINET | cinet@example.test |
cinet-local |
Log in through Access's POST /auth/login, then send its access token as a Bearer token to protected routes. The seeded customer Civil ID 296051500019 can be used for reads and the demo flows.
Tests
Run the integration tests in a container, using the same PostgreSQL service:
docker compose run --build --rm tests
docker compose down stops the containers and keeps PostgreSQL's data. docker compose down --volumes removes that local database so the next up starts fresh.
AI Use Disclosure
OpenAI GPT 6-Sol (Proprietary) and local Google Gemma-4-E4B (Apache 2.0) used as research and learning aids.
- Find and compare online sources such as https://learn.microsoft.com, and my personal Obsidian vault.
- Translate concepts I know from Rust / Java into C# and .NET.
- Code generation for test cases. Used to validate invariants that I expect to be held up.
- Commit message generation
- Final Sanity checks
In short, I treat it as a glorified search engine and concept translator, with a human in the loop for decisions, verification and implementation.
The disclosure will be updated accordingly in case any changes occur.