You can see more details in [Starlette's official docs for Background Tasks](https://www.starlette.dev/background/).

## Caveat { #caveat }

If you need to perform heavy background computation and you don't necessarily need it to be run by the same process (for example, you don't need to share memory, variables, etc), you might benefit from using other bigger tools like [Celery](https://docs.celeryq.dev).

	ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
	defer cancel()

	req, err := http.NewRequestWithContext(ctx, http.MethodPost, endpoint, bytes.NewReader(buf))
	if err != nil {
		return err
	}

	if token != "" {
		req.Header.Set("Authorization", token)
	}
	req.Header.Set("Content-Type", "application/json")

	clnt := http.Client{Transport: getRemoteInstanceTransport()}
	resp, err := clnt.Do(req)
	if err != nil {

    "tax": 3.2,
    "tags": [
        "rock",
        "metal",
        "bar"
    ],
    "images": [
        {
            "url": "http://example.com/baz.jpg",
            "name": "The Foo live"
        },
        {
            "url": "http://example.com/dave.jpg",
            "name": "The Baz"
        }
    ]
}
```

/// info | Informação

You can achieve that using [Pydantic's `AfterValidator`](https://docs.pydantic.dev/latest/concepts/validators/#field-after-validator) inside of `Annotated`.

/// tip

Pydantic also has [`BeforeValidator`](https://docs.pydantic.dev/latest/concepts/validators/#field-before-validator) and others. 🤓

///

	m := make(map[string]epHealth)
	tgts := sys.ListTargets(ctx, "", "")
	sys.hMutex.Lock()
	for _, t := range tgts {
		if _, ok := m[t.Endpoint]; !ok {
			scheme := "http"
			if t.Secure {
				scheme = "https"
			}
			epHealth := epHealth{
				Online:   true,
				Endpoint: t.Endpoint,
				Scheme:   scheme,
			}
			if prev, ok := sys.hc[t.Endpoint]; ok {

 * limitations under the License.
 */
package okhttp3.internal.idn

import kotlin.test.Test
import kotlin.test.assertEquals
import kotlin.test.assertNull

class PunycodeTest {
  /** https://datatracker.ietf.org/doc/html/rfc3492#section-7.1 */
  @Test fun rfc3492Samples() {
    // (A) Arabic (Egyptian)
    testEncodeDecode(
      unicode = "ليهمابتكلموشعربي؟",
      punycode = "xn--egbpdaj6bu4bxfgehfvwxn",

        taskRunner.kickCoordinator(this)
      }
    }
  }

  /**
   * Overload of [schedule] that uses a lambda for a repeating task.
   *
   * TODO: make this inline once this is fixed: https://github.com/oracle/graal/issues/3466
   */
  fun schedule(
    name: String,
    delayNanos: Long = 0L,
    block: () -> Long,
  ) {
    schedule(
      object : Task(name) {

    codePointString: String,
    component: Component,
  ) {
    val builder = "http://host/".toHttpUrl().newBuilder()
    assertFailsWith<IllegalArgumentException> {
      component[builder] = codePointString
    }
  }

  private fun testPunycode(
    codePointString: String,
    component: Component,
  ) {
    val builder = "http://host/".toHttpUrl().newBuilder()
    component[builder] = codePointString

        if (StringUtil.isBlank(url)) {
            return false;
        }
        final String lowerUrl = url.toLowerCase();
        if (lowerUrl.startsWith("http://") || lowerUrl.startsWith("https://")) {
            return true;
        }
        if (lowerUrl.startsWith("javascript:") || lowerUrl.startsWith("data:") || lowerUrl.startsWith("vbscript:")) {
            return false;
        }

### メソッドの上書き { #override-the-method }

これで、`.openapi()` メソッドを新しい関数に置き換えられます。

{* ../../docs_src/extending_openapi/tutorial001_py310.py hl[29] *}

### 確認 { #check-it }

[http://127.0.0.1:8000/redoc](http://127.0.0.1:8000/redoc) にアクセスすると、カスタムロゴ（この例では **FastAPI** のロゴ）が使われていることが確認できます: