As our code is calling Couchbase and we are not using the <a href="https://docs.couchbase.com/python-sdk/2.5/async-programming.html#asyncio-python-3-5" class="external-link" target="_blank">experimental Python <code>await</code> support</a>, we should declare our function with normal `def` instead of `async def`.

...But here I want to show you the community.

---

**FastAPI** receives a lot of support from the community. And I want to highlight their contributions.

These are the people that:

* [Help others with questions in GitHub](help-fastapi.md#help-others-with-questions-in-github){.internal-link target=_blank}.

To do that, and to accommodate different application needs, there are several ways it can do it. Some popular ways are:

* **Modify some DNS records**.
    * For this, the renewal program needs to support the APIs of the DNS provider, so, depending on the DNS provider you are using, this might or might not be an option.

    ✋️ 🇨🇻 📁 🚫 🤙 ✔️ ✔️ 👈 ☑ 📁.

Pydantic ✔️ 🐕‍🦺 👂 ⚪️➡️ 👉 🆎 📁 ⚙️ 🔢 🗃. 👆 💪 ✍ 🌖 <a href="https://docs.pydantic.dev/latest/concepts/pydantic_settings/#dotenv-env-support" class="external-link" target="_blank">Pydantic ⚒: 🇨🇻 (.🇨🇻) 🐕‍🦺</a>.

!!! tip
    👉 👷, 👆 💪 `pip install python-dotenv`.

###  `.env` 📁

👆 💪 ✔️ `.env` 📁 ⏮️:

```bash

```Python hl_lines="6  11  16" title="app/routers/users.py"
{!../../../docs_src/bigger_applications/app/routers/users.py!}
```

You can think of `APIRouter` as a "mini `FastAPI`" class.

All the same options are supported.

All the same `parameters`, `responses`, `dependencies`, `tags`, etc.

!!! tip
    In this example, the variable is called `router`, but you can name it however you want.

```

...পরবর্তীতে:

```Python
        ... "item_price": item.price ...
```

...এবং দেখুন কিভাবে আপনার এডিটর উপাদানগুলোকে সয়ংক্রিয়ভাবে-সম্পন্ন করবে এবং তাদের ধরন জানতে পারবে:

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

আরও বৈশিষ্ট্য সম্পন্ন উদাহরণের জন্য, দেখুন <a href="https://fastapi.tiangolo.com/tutorial/">টিউটোরিয়াল - ব্যবহারকারীর গাইড</a>.

But Gunicorn supports working as a **process manager** and allowing users to tell it which specific **worker process class** to use. Then Gunicorn would start one or more **worker processes** using that class.

For `await` to work, it has to be inside a function that supports this asynchronicity. To do that, you just declare it with `async def`:

```Python hl_lines="1"
async def get_burgers(number: int):
    # Do some asynchronous stuff to create the burgers
    return burgers
```

# Dependencies with yield

FastAPI supports dependencies that do some <abbr title='sometimes also called "exit code", "cleanup code", "teardown code", "closing code", "context manager exit code", etc.'>extra steps after finishing</abbr>.

To do this, use `yield` instead of `return`, and write the extra steps (code) after.

!!! tip
    Make sure to use `yield` one single time.

!!! note "Technical Details"
    Any function that is valid to use with:

## Official Docker Image with Gunicorn - Uvicorn