# Load Testing

Uses [Locust](https://locust.io) to simulate burst traffic against the API.

## Run locally

```bash
pip install locust
locust -f tests/load/locustfile.py \
  --host=http://localhost:8000 \
  --users=20 \
  --spawn-rate=2 \
  --run-time=60s \
  --headless
```

## Environment variables

| Variable | Default | Description |
|---|---|---|
| `API_KEY` | `test-key` | API key sent in `X-API-Key` header |
| `LOAD_TEST_REPO` | `https://github.com/psf/requests` | Repo submitted for analysis |

## Expected behaviour under load

- `/analyze/async` should handle 20 req/min per key before returning 429
- `/api/v1/health` p99 should stay under 50ms
- Worker queue depth should stabilise, not grow unboundedly