```

...and see how your editor will auto-complete the attributes and know their types:

![editor support](https://fastapi.tiangolo.com/img/vscode-completion.png)

For a more complete example including more features, see the <a href="https://fastapi.tiangolo.com/tutorial/">Tutorial - User Guide</a>.

**Spoiler alert**: the tutorial - user guide includes:

* It requires more code and is a bit more complex.
* The middleware has to be an `async` function.
    * If there is code in it that has to "wait" for the network, it could "block" your application there and degrade performance a bit.
    * Although it's probably not very problematic here with the way `SQLAlchemy` works.

{!../../../docs_src/templates/static/styles.css!}
```

And because you are using `StaticFiles`, that CSS file would be served automatically by your **FastAPI** application at the URL `/static/styles.css`.

## More details

```Python hl_lines="8"
{!../../../docs_src/events/tutorial001.py!}
```

In this case, the `startup` event handler function will initialize the items "database" (just a `dict`) with some values.

You can add more than one event handler function.

And your application won't start receiving requests until all the `startup` event handlers have completed.

### `shutdown` event

<div class="screenshot">
<img src="/img/tutorial/separate-openapi-schemas/image04.png">
</div>

With this feature from **Pydantic v2**, your API documentation is more **precise**, and if you have autogenerated clients and SDKs, they will be more precise too, with a better **developer experience** and consistency. 🎉

## Do not Separate Schemas

          config: >
            {
              "answered": {
                "delay": 864000,
                "message": "Assuming the original need was handled, this will be automatically closed now. But feel free to add more comments or create new issues or PRs."
              },
              "changes-requested": {
                "delay": 2628000,

=== "Pydantic v1"

    ```Python hl_lines="9-10"
    {!> ../../../docs_src/settings/app03_an/config_pv1.py!}
    ```

    !!! tip

I will show you some of the main concepts you should probably keep in mind when deploying a **FastAPI** application (although most of it applies to any other type of web application).

🩺 🎚 🔜 💪 🗄 🔗 📣 👈 👉 🛠️ `server` 🔎 `/api/v1` (⛅ 🗳). 🖼:

```JSON hl_lines="4-8"
{
    "openapi": "3.0.2",
    // More stuff here
    "servers": [
        {
            "url": "/api/v1"
        }
    ],
    "paths": {
            // More stuff here
    }
}
```

👉 🖼, "🗳" 💪 🕳 💖 **Traefik**. & 💽 🔜 🕳 💖 **Uvicorn**, 🏃‍♂ 👆 FastAPI 🈸.

### 🚚 `root_path`

    And also that you are not sending any data that should have been filtered by a `response_model`.

### More info

!!! note "Technical Details"
    You could also use `from starlette.responses import Response` or `from starlette.responses import JSONResponse`.