```Python hl_lines="1  3" title="app/routers/users.py"
{!../../../docs_src/bigger_applications/app/routers/users.py!}
```

### *Path operations* with `APIRouter`

And then you use it to declare your *path operations*.

Use it the same way you would use the `FastAPI` class:

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

你可以导入它并通过与 `FastAPI` 类相同的方式创建一个「实例」：

```Python hl_lines="1  3" title="app/routers/users.py"
{!../../../docs_src/bigger_applications/app/routers/users.py!}
```

### 使用 `APIRouter` 的*路径操作*

然后你可以使用它来声明*路径操作*。

使用方式与 `FastAPI` 类相同：

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

你可以将 `APIRouter` 视为一个「迷你 `FastAPI`」类。

所有相同的选项都得到支持。

      currentThread = Thread.currentThread()
      logger.addHandler(loggerHandler)
    }

    override fun secureConnectEnd(
      call: Call,
      handshake: Handshake?,
    ) {
      logger.removeHandler(loggerHandler)
    }

    override fun callEnd(call: Call) {
      // Cleanup log handler if failed.
      logger.removeHandler(loggerHandler)
    }

    portField = serverSocket!!.localPort

    taskRunner.newQueue().execute("MockWebServer $portField", cancelable = false) {
      try {
        logger.fine("$this starting to accept connections")
        acceptConnections()
      } catch (e: Throwable) {
        logger.log(Level.WARNING, "$this failed unexpectedly", e)
      }

      // Release all sockets and all threads, even if any close fails.

The client will get a **500 Internal Server Error** for that request, but the application will continue working for the next requests instead of just crashing completely.

### Bigger Errors - Crashes

Nevertheless, there might be cases where we write some code that **crashes the entire application** making Uvicorn and Python crash. 💥

```
~ mc admin config set alias/ scanner
KEY:

& ⤴️ `admin_email` ⚒ 🔜 ⚒ `"******@****.***"`.

`app_name` 🔜 `"ChimichangApp"`.

& `items_per_user` 🔜 🚧 🚮 🔢 💲 `50`.

## ⚒ ➕1️⃣ 🕹

👆 💪 🚮 👈 ⚒ ➕1️⃣ 🕹 📁 👆 👀 [🦏 🈸 - 💗 📁](../tutorial/bigger-applications.md){.internal-link target=_blank}.

🖼, 👆 💪 ✔️ 📁 `config.py` ⏮️:

```Python
{!../../../docs_src/settings/app01/config.py!}
```

& ⤴️ ⚙️ ⚫️ 📁 `main.py`:

Chaque personne devant vous attend 🕙 que son burger 🍔 soit prêt avant de quitter le comptoir car chacun des 8 serveurs va lui-même préparer le burger directement avant de prendre la commande suivante.

Puis c'est enfin votre tour, vous commandez 2 magnifiques burgers 🍔 pour vous et votre crush 😍.

Vous payez 💸.

components are installed into. Namespace definitions can be defined and specialized at the global, feature and component
level, with each lower level overriding the setting of the higher parent level. For example, if the global default
namespace is defined as:

```yaml
defaultNamespace: istio-system
```

and namespaces are specialized for the gateway feature and its components:

```yaml

pkg go/token, method (*File) LineStart(int) Pos
pkg io, type StringWriter interface { WriteString }
pkg io, type StringWriter interface, WriteString(string) (int, error)
pkg log, method (*Logger) Writer() io.Writer
pkg math/bits, func Add(uint, uint, uint) (uint, uint)
pkg math/bits, func Add32(uint32, uint32, uint32) (uint32, uint32)
pkg math/bits, func Add64(uint64, uint64, uint64) (uint64, uint64)