And it normally is a complex and "difficult" topic.

In many frameworks and systems just handling security and authentication takes a big amount of effort and code (in many cases it can be 50% or more of all the code written).

**FastAPI** provides several tools to help you deal with **Security** easily, rapidly, in a standard way, without having to study and learn all the security specifications.

/// note | 참고

FastAPI는 `q`의 기본값이 `= None`이기 때문에 필수가 아님을 압니다.

`Optional[str]`에 있는 `Optional`은 FastAPI가 사용하는게 아니지만, 편집기에게 더 나은 지원과 오류 탐지를 제공하게 해줍니다.

///

## 추가 검증

`q`가 선택적이지만 값이 주어질 때마다 **값이 50 글자를 초과하지 않게** 강제하려 합니다.

### `Query` 임포트

이를 위해 먼저 `fastapi`에서 `Query`를 임포트합니다:

{* ../../docs_src/query_params_str_validations/tutorial002.py hl[3] *}

## 기본값으로 `Query` 사용

/**
 * Unit test for {@link SimpleTimeLimiter}.
 *
 * @author kevinb
 * @author Jens Nyman
 */
@NullUnmarked
public class SimpleTimeLimiterTest extends TestCase {

  private static final long DELAY_MS = 50;
  private static final long ENOUGH_MS = 10000;
  private static final long NOT_ENOUGH_MS = 5;

  private static final String GOOD_CALLABLE_RESULT = "good callable result";

 * class. Similarly, if you know that a given string represents a domain name, use {@link
 * InternetDomainName} rather than this class.
 *
 * @author Craig Berry
 * @since 5.0
 */
@J2ktIncompatible
@GwtIncompatible
public final class HostSpecifier {

  private final String canonicalForm;

  private HostSpecifier(String canonicalForm) {
    this.canonicalForm = canonicalForm;
  }

  public void testWriteErrorAfterClose() throws Exception {
    byte[] data = newPreFilledByteArray(100);
    FileBackedOutputStream out = new FileBackedOutputStream(50);
    ByteSource source = out.asByteSource();

    out.write(data);
    assertThat(source.read()).isEqualTo(data);

    out.close();
    assertThrows(IOException.class, () -> out.write(42));

	type ItemContent struct {
		gorm.Model
		ItemID       uint   `gorm:"not null"`
		Name         string `gorm:"not null;type:varchar(50)"`
		LanguageCode string `gorm:"not null;type:varchar(2)"`
	}
	type Item struct {
		gorm.Model
		Logo     string        `gorm:"not null;type:varchar(50)"`
		Contents []ItemContent `gorm:"foreignKey:ItemID"`
	}

	tx := DB.Session(&gorm.Session{})

	// deadline (in seconds) up to which the go routine leak detection has to be retried.
	leakDetectDeadline = 5
	// pause time (in milliseconds) between each snapshot at the end of the go routine leak detection.
	leakDetectPauseTimeMs = 50
)

// LeakDetect - type with  methods for go routine leak detection.
type LeakDetect struct {
	relevantRoutines map[string]bool
}

    `module-info.java` files.

 *  Fix: Recover gracefully when worker threads are interrupted. When we introduced fast fallback in
    OkHttp 5.0, we started using background threads while connecting. Sadly that code didn't handle
    interruptions well. This is now fixed.

 *  Upgrade: [Kotlin 2.2.20][kotlin_2_2_20].
 *  Upgrade: [Okio 3.16.0][okio_3_16_0].

        checkVersionParsing("1.7.3.0", 0, 0, 0, 0, "1.7.3.0");
        checkVersionParsing("1.7.3.0-1", 0, 0, 0, 0, "1.7.3.0-1");
        checkVersionParsing("PATCH-1193602", 0, 0, 0, 0, "PATCH-1193602");
        checkVersionParsing("5.0.0alpha-2006020117", 0, 0, 0, 0, "5.0.0alpha-2006020117");
        checkVersionParsing("1.0.0.-SNAPSHOT", 0, 0, 0, 0, "1.0.0.-SNAPSHOT");
        checkVersionParsing("1..0-SNAPSHOT", 0, 0, 0, 0, "1..0-SNAPSHOT");

└─────┴─────────────────────────────────┴──────────────────────────────────┴────────┘
```

### Decommissioning status

```
λ mc admin decommission status alias/ http://minio{1...2}/data{1...4}
Decommissioning rate at 36 MiB/sec [4 TiB/50 TiB]
Started: 1 minute ago
```

Once it is **Complete**

```
λ mc admin decommission status alias/ http://minio{1...2}/data{1...4}