Nunca armazene a senha simples de um usuário ou envie-a em uma resposta como esta, a menos que você saiba todas as ressalvas e saiba o que está fazendo.

///

## Adicione um modelo de saída { #add-an-output-model }

Podemos, em vez disso, criar um modelo de entrada com a senha em texto simples e um modelo de saída sem ela:

{* ../../docs_src/response_model/tutorial003_py310.py hl[9,11,16] *}

copyright on the Program, and are irrevocable provided the stated
conditions are met.  This License explicitly affirms your unlimited
permission to run the unmodified Program.  The output from running a
covered work is covered by this License only if the output, given its
content, constitutes a covered work.  This License acknowledges your
rights of fair use or other equivalent, as provided by copyright law.

  "durations" : [ {
    "testProject" : "createLotsOfTasks",
    "linux" : 216
  } ]
}, {
  "scenario" : "org.gradle.performance.regression.corefeature.VerboseTestOutputPerformanceTest.cleanTest test with verbose test output",
  "durations" : [ {
    "testProject" : "withVerboseJUnit",
    "linux" : 207
  }, {
    "testProject" : "withVerboseTestNG",
    "linux" : 198
  } ]
}, {

<div class="termy">

```console
$ openssl rand -hex 32

09d25e094faa6ca2556c818166b7a9563b93f7099f6f0f4caa6cf63b88e8d3e7
```

</div>

And copy the output to the variable `SECRET_KEY` (don't use the one in the example).

Create a variable `ALGORITHM` with the algorithm used to sign the JWT token and set it to `"HS256"`.

Create a variable for the expiration of the token.

In case of a S3 multi-part operation each part is en/decrypted with the scheme shown in Figure 1. However, for each part a unique secret key is derived from the OEK and the part number using a PRF. So in case of multi-part not the OEK but the output of `PRF(OEK, part_id)` is used as secret key.

#### Cryptographic Primitives

		}
	}

	// test cases with inputs and expected result for HeadObject.
	testCases := []struct {
		bucketName string
		objectName string
		accessKey  string
		secretKey  string
		// expected output.
		expectedRespStatus int // expected response status body.
	}{
		// Test case - 1.
		// Fetching stat info of object and validating it.
		{
			bucketName:         bucketName,
			objectName:         objectName,

            }
            if (!context.invokerRequest.effectiveVerbose()) {
                context.logger.error("Re-run Maven using the '"
                        + MessageUtils.builder().strong("-X") + "' switch to enable verbose output");
            }

            if (!references.isEmpty()) {
                context.logger.error("");
                context.logger.error("For more information about the errors and possible solutions"

Никогда не храните пароль пользователя в открытом виде и не отправляйте его в ответе подобным образом, если только вы не понимаете всех рисков и точно знаете, что делаете.

///

## Добавить модель для ответа { #add-an-output-model }

Вместо этого мы можем создать входную модель с паролем в открытом виде и выходную модель без него:

{* ../../docs_src/response_model/tutorial003_py310.py hl[9,11,16] *}

   * Optional<T>}. Casting either of the above example {@code Optional} instances to {@code
   * Optional<Number>} (where {@code Number} is the desired output type) solves the problem:
   *
   * {@snippet :
   * Optional<Number> optionalInt = (Optional) getSomeOptionalInt();
   * Number value = optionalInt.or(0.5); // fine
   *

接下来，它 🤖 完成第一个任务（比如是我们的"慢文件"📝) 并继续与之相关的一切。

这个"等待其他事情"通常指的是一些相对较慢（与处理器和 RAM 存储器的速度相比）的 <abbr title="Input and Output">I/O</abbr> 操作，比如说：

* 通过网络发送来自客户端的数据
* 客户端接收来自网络中的数据
* 磁盘中要由系统读取并提供给程序的文件的内容
* 程序提供给系统的要写入磁盘的内容
* 一个 API 的远程调用
* 一个数据库操作，直到完成
* 一个数据库查询，直到返回结果
* 等等.

这个执行的时间大多是在等待 <abbr title="Input and Output">I/O</abbr> 操作，因此它们被叫做 "I/O 密集型" 操作。

它被称为"异步"的原因是因为计算机/程序不必与慢任务"同步"，去等待任务完成的确切时刻，而在此期间不做任何事情直到能够获取任务结果才继续工作。