---
title: Solution Challenge Backend
emoji: 🐳
colorFrom: blue
colorTo: green
sdk: docker
app_port: 7860
pinned: false
---

Backend API for Community Security and Emergency Management.

## Hugging Face deployment notes

- **Frontend:** [community-security-and-emergency-ma-gamma.vercel.app](https://community-security-and-emergency-ma-gamma.vercel.app/)
- **Set Space replicas to 1** — WebSocket camera control, refresh tokens, and live face state are per-container. Multiple replicas cause intermittent 401 refresh failures and face tracking that “stops working”.
- **Repository secrets (required):**
  - `CORS_ORIGINS=https://community-security-and-emergency-ma-gamma.vercel.app,https://rapid-eec43.web.app,http://localhost:5173`
  - `CEPHEUS_JWT_SECRET`, `CEPHEUS_AUTH_USERS`, `GEMINI_API_KEY`
- **Hardware:** Use **CPU upgrade** (or GPU if available). Set `OMP_NUM_THREADS=4` and `CEPHEUS_FACE_WORKERS=4` (already in Dockerfile) so InsightFace uses available CPU cores.