// Clear each collection, to make previously returned collections empty.
    for (Collection<V> collection : map.values()) {
      collection.clear();
    }
    map.clear();
    totalSize = 0;
  }

  // Views

  /**
   * {@inheritDoc}
   *
   * <p>The returned collection is not serializable.
   */
  @Override
  public Collection<V> get(@ParametricNullness K key) {

 * collector by only using a constant number of internal objects.
 *
 * <p>If there are no removals, then iteration order for the {@link #entrySet}, {@link #keySet}, and
 * {@link #values} views is the same as insertion order. Any removal invalidates any ordering
 * guarantees.
 *
 * <p>This class should not be assumed to be universally superior to {@code java.util.HashMap}.

使用 Linux 容器有几个优点，包括**安全性**、**可复制性**、**简单性**等。

/// tip

赶时间并且已经知道这些东西了？ 跳转到下面的 [`Dockerfile` 👇](#fastapi-docker_1)。

///

<details>
<summary>Dockerfile Preview 👀</summary>

```Dockerfile
FROM python:3.9

WORKDIR /code

COPY ./requirements.txt /code/requirements.txt

RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt

COPY ./app /code/app

- **Security**
  - Increased pod-level security granularity (eg: Container Image Policies, AppArmor and `sysctl` support)
  - Increased cluster-level security granularity (eg: Access Review API)

## Features

labels.search_result_created=Created:
labels.search_result_last_modified=Last Modified:
labels.search_result_favorite=Like
labels.search_result_favorited=Liked
labels.search_click_count=Click Count ({0})
labels.search_click_views={0} views
labels.search_result_more=More..
labels.search_result_cache=Cache
labels.search_result_similar=Similar Results ({0})
labels.facet_label_title=Label
labels.facet_timestamp_title=Time

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      return false;
    }
  }

  // Queues

  /**
   * A custom queue for managing eviction order. Note that this is tightly integrated with {@code
   * ReferenceEntry}, upon which it relies to perform its linking.
   *
   * <p>Note that this entire implementation makes the assumption that all elements which are in the
   * map are also in this queue, and that all elements not in the queue are not in the map.

- CRI now supports a "runtime_handler" field for RunPodSandboxRequest, used for selecting the runtime configuration...

  * Plugins

      * Introduces the ability to extend kubectl by adding third-party plugins. Developer preview, please refer to the documentation for instructions about how to use it. ([#37499](https://github.com/kubernetes/kubernetes/pull/37499), [@fabianofranz](https://github.com/fabianofranz))

- DRA device taints: `DeviceTaintRule` status provides information about the rule, including whether Pods still need to be evicted (`EvictionInProgress` condition). The newly added `None` effect can be used to preview what a `DeviceTaintRule` would do if it used the `NoExecute` effect and to taint devices (`device health`) without immediately affecting scheduling or running Pods. ([#134152](https://github.com/kubernetes/kubernetes/pull/134152), [@pohly](https:...