} else {
      return new ImmutableSortedMap<>(ImmutableSortedSet.emptySet(comparator), ImmutableList.of());
    }
  }

  /**
   * Returns the empty sorted map.
   *
   * <p><b>Performance note:</b> the instance returned is a singleton.
   */
  @SuppressWarnings("unchecked")
  // unsafe, comparator() returns a comparator on the specified type

///

/// check | Vérifications

Vous n'avez pas à vous soucier de la performance lors de l'inclusion de routeurs.

Cela prendra des microsecondes et ne se produira qu'au démarrage.

Donc cela n'affectera pas la performance. ⚡

///

* Des performances vraiment impressionnantes. C'est [l’un des frameworks Python les plus rapides disponibles, à l’égal de **NodeJS** et **Go**](https://github.com/encode/starlette#performance).
* Prise en charge des **WebSocket**.
* Tâches d'arrière-plan dans le processus.
* Évènements de démarrage et d'arrêt.
* Client de test basé sur HTTPX.
* **CORS**, GZip, fichiers statiques, réponses en streaming.

- Kubectl create service now respects namespace flag ([#101005](https://github.com/kubernetes/kubernetes/pull/101005), [@zxh326](https://github.com/zxh326)) [SIG CLI]
- Kubelet: improve the performance when waiting for a synchronization of the node list with the kube-apiserver ([#99336](https://github.com/kubernetes/kubernetes/pull/99336), [@neolit123](https://github.com/neolit123)) [SIG Node]

* Серьёзно впечатляющая производительность. Это [один из самых быстрых фреймворков на Python, наравне с **NodeJS** и **Go**](https://github.com/encode/starlette#performance).
* Поддержка **WebSocket**.
* Фоновые задачи в том же процессе.
* События запуска и выключения.
* Тестовый клиент построен на HTTPX.
* **CORS**, GZip, статические файлы, потоковые ответы.

      SortedMap<K, V> unfiltered, Predicate<? super K> keyPredicate) {
    // TODO(lowasser): Return a subclass of FilteredKeyMap for slightly better performance.
    return filterEntries(unfiltered, keyPredicateOnEntries(keyPredicate));
  }

  /**
   * Returns a navigable map containing the mappings in {@code unfiltered} whose keys satisfy a

 * Iterator}. Except as noted, each method has a corresponding {@link Iterable}-based method in the
 * {@link Iterables} class.
 *
 * <p><i>Performance notes:</i> Unless otherwise noted, all of the iterators produced in this class
 * are <i>lazy</i>, which means that they only advance the backing iteration when absolutely
 * necessary.
 *

 * Iterator}. Except as noted, each method has a corresponding {@link Iterable}-based method in the
 * {@link Iterables} class.
 *
 * <p><i>Performance notes:</i> Unless otherwise noted, all of the iterators produced in this class
 * are <i>lazy</i>, which means that they only advance the backing iteration when absolutely
 * necessary.
 *

* Rendimiento seriamente impresionante. Es [uno de los frameworks de Python más rápidos disponibles, a la par de **NodeJS** y **Go**](https://github.com/encode/starlette#performance).
* Soporte para **WebSocket**.
* Tareas en segundo plano en el mismo proceso.
* Eventos de inicio y apagado.
* Cliente de prueba basado en HTTPX.
* **CORS**, GZip, archivos estáticos, responses en streaming.

### JSON Performansı { #json-performance }

Kısaca, en yüksek performansı istiyorsanız bir [Response Model](../tutorial/response-model.md) kullanın ve *path operation decorator* içinde `response_class` tanımlamayın.