func (s *ScanRange) Validate() error {
	if s == nil {
		return nil
	}
	if s.Start == nil && s.End == nil {
		// This parameter is optional, but when specified, it must not be empty.
		// Ref: https://docs.aws.amazon.com/AmazonS3/latest/API/API_SelectObjectContent.html#AmazonS3-SelectObjectContent-request-ScanRange
		return errors.New("ScanRange: No Start or End specified")
	}
	if s.Start == nil || s.End == nil {
		return nil

graduated three features to beta in the 1.10 release.  First, [CPU Manager](https://kubernetes.io/docs/tasks/administer-cluster/cpu-management-policies/), which allows users to request exclusive CPU cores.  This helps performance in a variety of use-cases, including network latency sensitive applications, as well as applications that benefit from CPU cache residency.  Next, [Huge Pages](https://kubernetes.io/docs/tasks/manage-hugepages/scheduling-hugepages/), which allows pods to consume either 2Mi or 1Gi...

**📨** 💪 📊 📨 👩‍💻 👆 🛠️. **📨** 💪 💽 👆 🛠️ 📨 👩‍💻.

👆 🛠️ 🌖 🕧 ✔️ 📨 **📨** 💪. ✋️ 👩‍💻 🚫 🎯 💪 📨 **📨** 💪 🌐 🕰.

📣 **📨** 💪, 👆 ⚙️ <a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> 🏷 ⏮️ 🌐 👫 🏋️ &amp; 💰.

/// info

📨 💽, 👆 🔜 ⚙️ 1️⃣: `POST` (🌅 ⚠), `PUT`, `DELETE` ⚖️ `PATCH`.

It is based on <a href="https://www.python-httpx.org" class="external-link" target="_blank">HTTPX</a>, which in turn is designed based on Requests, so it's very familiar and intuitive.

With it, you can use <a href="https://docs.pytest.org/" class="external-link" target="_blank">pytest</a> directly with **FastAPI**.

## Using `TestClient`

/// info

				cache.iamPolicyDocsMap[policyName] = policyDocs[index]
			}
		}

		policiesList = policiesList[count:]
	}

	if took := time.Since(policyLoadStartTime); took > maxIAMLoadOpTime {
		logger.Info("Policy docs load took %.2fs (for %d items)", took.Seconds(), len(policiesList))
	}

	if iamOS.usersSysType == MinIOUsersSysType {
		bootstrapTraceMsgFirstTime("loading regular IAM users")
		regUsersLoadStartTime := UTCNow()

- Migrated the `nodevolumelimits` scheduler plugin to use [contextual logging](https://k8s.io/docs/concepts/cluster-administration/system-logs/#contextual-logging). ([#116884](https://github.com/kubernetes/kubernetes/pull/116884), [@mengjiao-liu](https://github.com/mengjiao-liu))

Ihre API sendet fast immer einen **Response**body. Aber Clients senden nicht unbedingt immer **Request**bodys (sondern nur Metadaten).

Um einen **Request**body zu deklarieren, verwenden Sie <a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a>-Modelle mit allen deren Fähigkeiten und Vorzügen.

/// info

# 请求体

FastAPI 使用**请求体**从客户端（例如浏览器）向 API 发送数据。

**请求体**是客户端发送给 API 的数据。**响应体**是 API 发送给客户端的数据。

API 基本上肯定要发送**响应体**，但是客户端不一定发送**请求体**。

使用 <a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> 模型声明**请求体**，能充分利用它的功能和优点。

/// info | "说明"

发送数据使用 `POST`（最常用）、`PUT`、`DELETE`、`PATCH` 等操作。

规范中没有定义使用 `GET` 发送请求体的操作，但不管怎样，FastAPI 也支持这种方式，只不过仅用于非常复杂或极端的用例。

/// warning | "Внимание"

Это технические детали, которые можно пропустить, если они не важны для вас сейчас.

///

`RequestValidationError` является подклассом Pydantic <a href="https://docs.pydantic.dev/latest/concepts/models/#error-handling" class="external-link" target="_blank">`ValidationError`</a>.

Além dos tipos singulares normais como `str`, `int`, `float`, etc. Você também pode usar tipos singulares mais complexos que herdam de `str`.

Para ver todas as opções possíveis, cheque a documentação para os<a href="https://docs.pydantic.dev/latest/concepts/types/" class="external-link" target="_blank">tipos exoticos do Pydantic</a>. Você verá alguns exemplos no próximo capitulo.