> For the complete documentation index, see [llms.txt](https://docs.netmap.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.netmap.dev/product-introduction/architecture.md).

# Architecture

```mermaid
flowchart LR
    Browser[Browser SPA] --> Nginx[nginx]
    Client[API client] --> Nginx
    Device[Syslog sender] --> Syslog[Syslog service]
    Nginx --> Uvicorn[uvicorn Unix socket]
    Uvicorn --> API[FastAPI /api/v1]
    API --> Auth[Auth dependencies]
    Auth --> Services[Services]
    Services --> MainDB[(netmap.db)]
    Syslog --> FirewallDB[(firewall.db)]
    Services --> FirewallDB
    Services --> Workers[Background workers]
    Workers --> MainDB
    Workers --> FirewallDB
```

Verified source:

* App entrypoint: `backend/app/main.py`.
* API router mount: `app.include_router(api_router, prefix="/api/v1")`.
* nginx proxy: `docker/aio-nginx.conf.template`.
* entrypoint process supervision: `docker/aio-entrypoint.sh` and `tini`.
* main DB session: `backend/app/db/session.py`.
* firewall DB session: `backend/app/db/firewall_session.py`.

Background services start during FastAPI startup: syslog, alert monitor, scheduled discovery, IP reservation reminders, scheduled backups, and firewall startup maintenance.


---

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