assertThrows(IllegalStateException.class, () -> manager.startAsync().awaitHealthy());
    assertTrue(listener.stoppedCalled);
  }

  /**
   * This covers a bug where listener.healthy would get called when a single service failed during
   * startup (it occurred in more complicated cases also).
   */
  public void testFailStart_singleServiceCallsHealthy() {
    Service a = new FailStartService();

<div class="termy">

```console
$ pip install sqlmodel
---> 100%
```

</div>

## Die App mit einem einzelnen Modell erstellen { #create-the-app-with-a-single-model }

Wir erstellen zuerst die einfachste erste Version der App mit einem einzigen **SQLModel**-Modell.

   *
   * <p>This must be a (2^n)-1 as it is used as a mask.
   */
  static final int DRAIN_THRESHOLD = 0x3F;

  /**
   * Maximum number of entries to be drained in a single cleanup run. This applies independently to
   * the cleanup queue and both reference queues.
   */
  // TODO(fry): empirically optimize this
  static final int DRAIN_MAX = 16;

  // Fields

  /**

}

// ResourceMetrics is a map of unique key identifying
// a resource metric (e.g. reads_per_sec_{node}_{drive})
// to its data
type ResourceMetrics map[string]ResourceMetric

// ResourceMetric represents a single resource metric
// The metrics are collected from all servers periodically
// and stored in the resource metrics map.
// It also maintains the count of number of times this metric

你會看到另一種自動產生的文件（由 [ReDoc](https://github.com/Rebilly/ReDoc) 提供）：

![ReDoc](https://fastapi.tiangolo.com/img/index/index-02-redoc-simple.png)

## 為單檔 FastAPI 建置 Docker 映像 { #build-a-docker-image-with-a-single-file-fastapi }

如果你的 FastAPI 是單一檔案，例如沒有 `./app` 目錄的 `main.py`，你的檔案結構可能像這樣：

```
.
├── Dockerfile
├── main.py
└── requirements.txt
```

接著你只需要在 `Dockerfile` 中調整對應的路徑以複製該檔案：

   */
  public final double getRate() {
    synchronized (mutex()) {
      return doGetRate();
    }
  }

  abstract double doGetRate();

  /**
   * Acquires a single permit from this {@code RateLimiter}, blocking until the request can be
   * granted. Tells the amount of time slept, if any.
   *
   * <p>This method is equivalent to {@code acquire(1)}.
   *

  public static <E> ImmutableSortedSet<E> of() {
    return (ImmutableSortedSet<E>) RegularImmutableSortedSet.NATURAL_EMPTY_SET;
  }

  /** Returns an immutable sorted set containing a single element. */
  public static <E extends Comparable<? super E>> ImmutableSortedSet<E> of(E e1) {
    return new RegularImmutableSortedSet<>(ImmutableList.of(e1), Ordering.natural());
  }

  /**

  {{.HelpName}} {{if .VisibleFlags}}[FLAGS] {{end}}DIR{1...64} DIR{65...128}

DIR:
  DIR points to a directory on a filesystem. When you want to combine
  multiple drives into a single large system, pass one directory per
  filesystem separated by space. You may also use a '...' convention
  to abbreviate the directory arguments. Remote directories in a
  distributed setup are encoded as HTTP(s) URIs.

        // Test with empty map and whitespace config
        paramMap = new HashMap<>();
        ParameterUtil.loadConfigParams(paramMap, "   \n  ");
        assertEquals(0, paramMap.size());

        // Test loading single parameter
        paramMap = new HashMap<>();
        configParam = "key1=value1";
        ParameterUtil.loadConfigParams(paramMap, configParam);
        assertEquals(1, paramMap.size());

   *       {@code MapJoiner} method that accepts entries as input, and receive output of the form
   *       {@code key1=A&key1=B&key2=C}.
   *   <li>To output a single entry for each key, pass {@code multimap.asMap()} to a {@code
   *       MapJoiner} method that accepts a map as input, and receive output of the form {@code
   *       key1=[A, B]&key2=C}.
   * </ul>
   *