* Data validation
* API annotation and automatic documentation

And you only have to declare them once.

С **FastAPI** вы получаете все возможности **Starlette** (так как FastAPI это всего лишь Starlette на стероидах):

* Серьёзно впечатляющая производительность. Это <a href="https://github.com/encode/starlette#performance" class="external-link" target="_blank">один из самых быстрых фреймворков на Python</a>, наравне с приложениями использующими **NodeJS** или **Go**.
* Поддержка **WebSocket**.
* Фоновые задачи для процессов.

* Python <a href="https://github.com/fastapi/fastapi" class="external-link" target="_blank">**FastAPI**</a> backend:
    * **Hızlı**: **NodeJS** ve **Go** ile eşit, çok yüksek performans (Starlette ve Pydantic'e teşekkürler).
    * **Sezgisel**: Editor desteğı. <abbr title="auto-complete, IntelliSense gibi isimlerle de bilinir">Otomatik tamamlama</abbr>. Daha az debugging.

   * all super-classes, that are annotated with {@code @Subscribe}. The cache is shared across all
   * instances of this class; this greatly improves performance if multiple EventBus instances are
   * created and objects of the same class are registered on all of them.
   */
  private static final LoadingCache<Class<?>, ImmutableList<Method>> subscriberMethodsCache =

      Collector<Range<E>, ?, ImmutableRangeSet<E>> toImmutableRangeSet() {
    return CollectCollectors.toImmutableRangeSet();
  }

  /**
   * Returns an empty immutable range set.
   *
   * <p><b>Performance note:</b> the instance returned is a singleton.
   */
  @SuppressWarnings("unchecked")
  public static <C extends Comparable> ImmutableRangeSet<C> of() {
    return (ImmutableRangeSet<C>) EMPTY;
  }

  /**

با **FastAPI** شما تمام ویژگی های **Starlette** را خواهید داشت (زیرا FastAPI یک نسخه و نمونه به تمام معنا از Starlette است):

* عملکرد به طورجدی چشمگیر. <a href="https://github.com/encode/starlette#performance" class="external-link" target="_blank">این یکی از سریعترین فریم ورک های موجود در پایتون است که همتراز با **نود جی اس** و **گو**</a> است.
* پشتیبانی از **WebSocket**.

   * to consider using {@link #forEachPair} instead of this method.
   *
   * <p><b>Performance note:</b> The resulting stream is not <a
   * href="http://gee.cs.oswego.edu/dl/html/StreamParallelGuidance.html">efficiently splittable</a>.
   * This may harm parallel performance.
   */
  @Beta
  public static <A extends @Nullable Object, B extends @Nullable Object, R extends @Nullable Object>

                }
            });
        }

        long endTime = System.currentTimeMillis();
        long duration = endTime - startTime;

        // Then - should complete quickly (this is more of a performance indicator)
        assertTrue(duration < 1000, "Creating and using 10000 EmptyIterators should be fast (took " + duration + "ms)");
    }

    @Test

Con **FastAPI** obtienes todas las funcionalidades de **Starlette** (ya que FastAPI es simplemente Starlette potenciado):

* Rendimiento seriamente impresionante. Es <a href="https://github.com/encode/starlette#performance" class="external-link" target="_blank">uno de los frameworks de Python más rápidos disponibles, a la par de **NodeJS** y **Go**</a>.
* Soporte para **WebSocket**.
* Tareas en segundo plano en el mismo proceso.

       * it would check hash codes as an optimization when appropriate. If we
       * did these things, it would just make things worse for the most
       * performance-conscious users.
       */
      if (key.equals(candidateKey)) {
        return entry.getValue();
      }
    }
    return null;
  }

  @Override