///

```Python hl_lines="1"
async def needy_dependency(fresh_value: str = Depends(get_value, use_cache=False)):
    return {"fresh_value": fresh_value}
```

////

## Recap { #recap }

Apart from all the fancy words used here, the **Dependency Injection** system is quite simple.

Just functions that look the same as the *path operation functions*.

<img src="/img/async/concurrent-burgers/concurrent-burgers-01.png" class="illustration">

Then it's your turn, you place your order of 2 very fancy burgers for your crush and you. 🍔🍔

<img src="/img/async/concurrent-burgers/concurrent-burgers-02.png" class="illustration">

{* ../../docs_src/metadata/tutorial004_py310.py hl[3:16,18] *}

Notice that you can use Markdown inside of the descriptions, for example "login" will be shown in bold (**login**) and "fancy" will be shown in italics (_fancy_).

/// tip

You don't have to add metadata for all the tags that you use.

///

### Use your tags { #use-your-tags }

我們用 `users` 與 `items` 兩個標籤來示範。

先為你的標籤建立中繼資料，然後將它傳給 `openapi_tags` 參數：

{* ../../docs_src/metadata/tutorial004_py310.py hl[3:16,18] *}

注意你可以在描述中使用 Markdown，例如「login」會以粗體（**login**）顯示，而「fancy」會以斜體（_fancy_）顯示。

/// tip | 提示

你不必為你使用到的每個標籤都加入中繼資料。

///

### 使用你的標籤 { #use-your-tags }

在你的路徑操作（以及 `APIRouter`s）上使用 `tags` 參數，將它們歸類到不同標籤下：

`users` と `items` のタグを使った例で試してみましょう。

タグのメタデータを作成し、それを `openapi_tags` パラメータに渡します:

{* ../../docs_src/metadata/tutorial004_py310.py hl[3:16,18] *}

説明の中でMarkdownを使用できることに注意してください。たとえば「login」は太字 (**login**) で表示され、「fancy」は斜体 (_fancy_) で表示されます。

/// tip | 豆知識

使用するすべてのタグにメタデータを追加する必要はありません。

///

### タグの使用 { #use-your-tags }

*path operation*（および `APIRouter`）の `tags` パラメータを使用して、それらを異なるタグに割り当てます:

/// tip

You could use any other SQL or NoSQL database library you want (in some cases called <abbr title="Object Relational Mapper: a fancy term for a library where some classes represent SQL tables and instances represent rows in those tables">"ORMs"</abbr>), FastAPI doesn't force you to use anything. 😎

///

  @J2ktIncompatible
  @GwtIncompatible // not used by GWT emulation
  @VisibleForTesting
  static final String SHARED_SECRETS_CLASSNAME = "sun.misc.SharedSecrets";

  /** Access to some fancy internal JVM internals. */
  @J2ktIncompatible @GwtIncompatible // java.lang.reflect
  private static final @Nullable Object jla = getJla();

  /**

{* ../../docs_src/metadata/tutorial004_py310.py hl[3:16,18] *}

Помните, что вы можете использовать Markdown внутри описания, к примеру "login" будет отображен жирным шрифтом (**login**) и "fancy" будет отображаться курсивом (_fancy_).

/// tip | Подсказка

Вам необязательно добавлять метаданные для всех используемых тегов

///

### Используйте собственные теги { #use-your-tags }

Tag'leriniz için metadata oluşturup `openapi_tags` parametresine geçin:

{* ../../docs_src/metadata/tutorial004_py310.py hl[3:16,18] *}

Açıklamaların içinde Markdown kullanabileceğinizi unutmayın; örneğin "login" kalın (**login**) ve "fancy" italik (_fancy_) olarak gösterilecektir.

/// tip | İpucu

Kullandığınız tüm tag'ler için metadata eklemek zorunda değilsiniz.

///

### Tag'lerinizi kullanın { #use-your-tags }

{* ../../docs_src/metadata/tutorial004_py310.py hl[3:16,18] *}

Observe que você pode usar Markdown dentro das descrições. Por exemplo, "login" será exibido em negrito (**login**) e "fancy" será exibido em itálico (_fancy_).

/// tip | Dica

Você não precisa adicionar metadados para todas as tags que você usa.

///

### Use suas tags { #use-your-tags }