Pero como estamos usando el decorador `@lru_cache` encima, el objeto `Settings` se creará solo una vez, la primera vez que se llame. ✔️

{* ../../docs_src/settings/app03_an_py39/main.py hl[1,11] *}

    assertThat(response.handshake!!.localPrincipal).isNull()
    assertThat(response.body.string()).isEqualTo("abc")
  }

  @Flaky
  @RetryingTest(5)
  fun missingClientAuthFailsForNeeds() {
    // Fails with 11.0.1 https://github.com/square/okhttp/issues/4598
    // StreamReset stream was reset: PROT...
    val client = buildClient(null, clientIntermediateCa.certificate)
    val socketFactory = buildServerSslSocketFactory()

		{"\x80\x00", 0, true},
		{"\x80\x00\x00", 0, true},
		{"\xbf", (1 << 6) - 1, true},
		{"\xbf\xff", (1 << 14) - 1, true},
		{"\xbf\xff\xff", (1 << 22) - 1, true},
		{"\xff", -1, true},
		{"\xff\xff", -1, true},
		{"\xff\xff\xff", -1, true},
		{"\xc0", -1 * (1 << 6), true},
		{"\xc0\x00", -1 * (1 << 14), true},
		{"\xc0\x00\x00", -1 * (1 << 22), true},
		{"\x87\x76\xa2\x22\xeb\x8a\x72\x61", 537795476381659745, true},

But as we are using the `@lru_cache` decorator on top, the `Settings` object will be created only once, the first time it's called. ✔️

{* ../../docs_src/settings/app03_an_py39/main.py hl[1,11] *}

     * This will overwrite any previously set status, body, or streamHandler.
     */
    public fun webSocketUpgrade(listener: WebSocketListener): Builder =
      apply {
        status = "HTTP/1.1 101 Switching Protocols"
        setHeader("Connection", "Upgrade")
        setHeader("Upgrade", "websocket")
        webSocketListener = listener
      }

    /**

```Python hl_lines="5" title="app/main.py"
{!../../docs_src/bigger_applications/app/main.py!}
```

### 🔌 `APIRouter`Ⓜ `users` & `items`

🔜, ➡️ 🔌 `router`Ⓜ ⚪️➡️ 🔁 `users` & `items`:

```Python hl_lines="10-11" title="app/main.py"
{!../../docs_src/bigger_applications/app/main.py!}
```

/// info

`users.router` 🔌 `APIRouter` 🔘 📁 `app/routers/users.py`.

Da wir jedoch den `@lru_cache`-Dekorator oben verwenden, wird das `Settings`-Objekt nur einmal erstellt, nämlich beim ersten Aufruf. ✔️

{* ../../docs_src/settings/app03_an_py39/main.py hl[1,11] *}

 *  New: Upgrade to Okio 1.11.0.

     ```xml
     <dependency>
       <groupId>com.squareup.okio</groupId>
       <artifactId>okio</artifactId>
       <version>1.11.0</version>
     </dependency>

     com.squareup.okio:okio:1.11.0
     ```

 *  Fix: Avoid sending empty HTTP/2 data frames when there is no request body.

	c.Assert(response.StatusCode, http.StatusOK)

	// make long object name.
	longObjName = fmt.Sprintf("%0255d/%0255d/%0255d/%0255d/%0255d", 1, 1, 1, 1, 1)
	if IsDocker() || IsKubernetes() {
		longObjName = fmt.Sprintf("%0242d/%0242d/%0242d/%0242d/%0242d", 1, 1, 1, 1, 1)
	}
	// create new HTTP request to insert the object.
	buffer = bytes.NewReader([]byte("hello world"))

{!../../docs_src/bigger_applications/app/main.py!}
```

### Incluir los `APIRouter`s para `users` y `items`

Ahora, incluyamos los `router`s de los submódulos `users` y `items`:

```Python hl_lines="10-11" title="app/main.py"
{!../../docs_src/bigger_applications/app/main.py!}
```

/// info | Información

`users.router` contiene el `APIRouter` dentro del archivo `app/routers/users.py`.