full_name = user_dict["full_name"],
    hashed_password = hashed_password,
)
```

/// warning

輔助函式 `fake_password_hasher` 與 `fake_save_user` 只是用來示範資料流程，並不提供任何實際的安全性。

///

## 減少重複 { #reduce-duplication }

減少程式碼重複是 FastAPI 的核心理念之一。

因為重複的程式碼會提高發生錯誤、安全性問題、程式不同步（某處更新但其他處未更新）等風險。

而這些模型共享大量資料，重複了屬性名稱與型別。

我們可以做得更好。

我們可以宣告一個作為基底的 `UserBase` 模型，其他模型繼承它成為子類別，沿用其屬性（型別宣告、驗證等）。

   * Nearly all declarations in this class are package-private,
   * accessed directly by subclasses.
   *
   * Table entries are of class Cell; a variant of AtomicLong padded
   * to reduce cache contention on most processors. Padding is
   * overkill for most Atomics because they are usually irregularly
   * scattered in memory and thus don't interfere much with each

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.ds.callback;

import static org.codelibs.core.stream.StreamUtil.stream;

import java.util.ArrayList;
import java.util.Deque;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import java.util.concurrent.ExecutorService;

    }

    /**
     * Creates and returns a new instance of {@link ArrayDeque}.
     *
     * @param <E> the element type of {@link ArrayDeque}
     * @param c the collection of elements to be placed in the deque
     * @return a new instance of {@link ArrayDeque}
     * @see ArrayDeque#ArrayDeque(Collection)
     */
    public static <E> ArrayDeque<E> newArrayDeque(final Collection<? extends E> c) {

 *       hand, is multiple-use, and does implement {@link Iterable}.
 *   <li>Streams offer many features not found here, including {@code min/max}, {@code distinct},
 *       {@code reduce}, {@code sorted}, the very powerful {@code collect}, and built-in support for
 *       parallelizing stream operations.
 *   <li>{@code FluentIterable} contains several features not available on {@code Stream}, which are

 *       hand, is multiple-use, and does implement {@link Iterable}.
 *   <li>Streams offer many features not found here, including {@code min/max}, {@code distinct},
 *       {@code reduce}, {@code sorted}, the very powerful {@code collect}, and built-in support for
 *       parallelizing stream operations.
 *   <li>{@code FluentIterable} contains several features not available on {@code Stream}, which are

- `headers` - D'éventuels en-têtes personnalisés à inclure, sous forme de dictionnaire.
- `media_type` - Une chaîne donnant le media type. Si non défini, le nom du fichier ou le chemin sera utilisé pour en déduire un media type.
- `filename` - Si défini, sera inclus dans l'en-tête `Content-Disposition` de la réponse.

Les réponses de type fichier incluront les en-têtes appropriés `Content-Length`, `Last-Modified` et `ETag`.

#### Connection Timeouts
```java
// Increase timeout values
client.setConnectionTimeout(60000);  // 60 seconds
client.setSocketTimeout(120000);     // 120 seconds
```

#### Memory Issues
```java
// Reduce concurrent threads and batch sizes
crawler.crawlerContext.setNumOfThread(5);
crawler.crawlerContext.setMaxAccessCount(1000);
```

#### SSL/TLS Issues
```java
// Configure SSL settings

import com.google.common.collect.Iterators;
import com.google.common.collect.Maps;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.util.ArrayDeque;
import java.util.Collection;
import java.util.Deque;
import java.util.Iterator;
import java.util.Map;
import java.util.Objects;
import java.util.Queue;
import java.util.Set;
import org.jspecify.annotations.Nullable;

/**

	},
	ErrSlowDownRead: {
		Code:           "SlowDownRead",
		Description:    "Resource requested is unreadable, please reduce your request rate",
		HTTPStatusCode: http.StatusServiceUnavailable,
	},
	ErrSlowDownWrite: {
		Code:           "SlowDownWrite",
		Description:    "Resource requested is unwritable, please reduce your request rate",
		HTTPStatusCode: http.StatusServiceUnavailable,
	},
	ErrMaxVersionsExceeded: {