* which is still better than alternatives.
   *
   * Per-thread hash codes are initialized to random values.
   * Contention and/or table collisions are indicated by failed
   * CASes when performing an update operation (see method
   * retryUpdate). Upon a collision, if the table size is less than
   * the capacity, it is doubled in size unless some other thread
   * holds the lock. If a hashed slot is empty, and lock is

### 客户端方法名称

现在生成的方法名像 `createItemItemsPost` 看起来不太简洁:

```TypeScript
ItemsService.createItemItemsPost({name: "Plumbus", price: 5})
```

...这是因为客户端生成器为每个 *路径操作* 使用OpenAPI的内部 **操作 ID(operation ID)**。

OpenAPI要求每个操作 ID 在所有 *路径操作* 中都是唯一的，因此 FastAPI 使用**函数名**、**路径**和**HTTP方法/操作**来生成此操作ID，因为这样可以确保这些操作 ID 是唯一的。

但接下来我会告诉你如何改进。 🤓

## 自定义操作ID和更好的方法名

///

**FastAPI** 的 `fastapi.security.oauth2` 里包含了所有 OAuth2 身份验证流工具。

## 装饰器 `dependencies` 中的 `Security`

  interface Strategy extends java.io.Serializable {

    /**
     * Sets {@code numHashFunctions} bits of the given bit array, by hashing a user element.
     *
     * <p>Returns whether any bits changed as a result of this operation.
     */
    <T extends @Nullable Object> boolean put(
        @ParametricNullness T object,
        Funnel<? super T> funnel,
        int numHashFunctions,
        LockFreeBitArray bits);

    /**

我们还可以添加一个 `tags` 列表和额外的 `responses` 列表，这些参数将应用于此路由器中包含的所有*路径操作*。

我们可以添加一个 `dependencies` 列表，这些依赖项将被添加到路由器中的所有*路径操作*中，并将针对向它们发起的每个请求执行/解决。

/// tip

请注意，和[*路径操作装饰器*中的依赖项](dependencies/dependencies-in-path-operation-decorators.md){.internal-link target=_blank}很类似，没有值会被传递给你的*路径操作函数*。

///

最终结果是项目相关的路径现在为：

* `/items/`
* `/items/{item_id}`

...如我们所愿。

* 它们将被标记为仅包含单个字符串 `"items"` 的标签列表。

	}

	// Now, delete object from hot-tier namespace
	if _, err := objectAPI.DeleteObject(ctx, oi.Bucket, oi.Name, opts); err != nil {
		return err
	}

	// Send audit for the lifecycle delete operation
	defer auditLogLifecycle(ctx, *oi, ILMExpiry, tags, traceFn)

	eventName := event.ObjectRemovedDelete
	if oi.DeleteMarker {
		eventName = event.ObjectRemovedDeleteMarkerCreated
	}
	objInfo := ObjectInfo{

/// tip

Prefer to use the `Annotated` version if possible.

///

```Python hl_lines="90-107"
{!> ../../docs_src/security/tutorial004.py!}
```

////

## Update the `/token` *path operation*

Create a `timedelta` with the expiration time of the token.

Create a real JWT access token and return it.

//// tab | Python 3.10+

```Python hl_lines="118-133"

     * This iteration has the following two properties:
     *
     * a) every iteration (except potentially the first) has guess >= floor(sqrt(x)). This is
     * because guess' is the arithmetic mean of guess and x / guess, sqrt(x) is the geometric mean,
     * and the arithmetic mean is always higher than the geometric mean.
     *

}

// AuthNErrorResponse - represents an error response from the authN plugin.
type AuthNErrorResponse struct {
	Reason string `json:"reason"`
}

// AuthNResponse - represents a result of the authentication operation.
type AuthNResponse struct {
	Success *AuthNSuccessResponse
	Failure *AuthNErrorResponse
}

const (
	minValidityDurationSeconds int = 900
	maxValidityDurationSeconds int = 365 * 24 * 3600
)

**FastAPI** 🔌 🚙 🌐 👫 Oauth2️⃣ 🤝 💧 `fastapi.security.oauth2`.

## `Security` 👨‍🎨 `dependencies`