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.

 * the columns. The reverse is also available, associating a column with a row key / value map. Note
 * that, in some implementations, data access by column key may have fewer supported operations or
 * worse performance than data access by row key.
 *
 * <p>The methods returning collections or maps always return views of the underlying table.
 * Updating the table can change the contents of those collections, and updating the collections

}

/**
 * We have some "shared" host where a Linux build agent and a Windows build agent
 * both run on the same bare metal. Some builds require exclusive access to the
 * hardware resources (e.g. performance test).
 */
fun Requirements.requiresNotSharedHost() {
    doesNotContain("agent.host.type", "shared")
}

/**
 * This is an undocumented location that forbids anonymous access.

З **FastAPI** ви отримуєте всі можливості **Starlette** (адже FastAPI — це, по суті, Starlette на стероїдах):

* Разюча продуктивність. Це <a href="https://github.com/encode/starlette#performance" class="external-link" target="_blank">один із найшвидших фреймворків на Python</a>, на рівні з **NodeJS** і **Go**.
* Підтримка **WebSocket**.
* Фонові задачі у процесі.
* Події запуску та завершення роботи.

- We limited the number of drives to 16 for erasure set because, erasure code shards more than 16 can become chatty and do not have any performance advantages. Additionally since 16 drive erasure set gives you tolerance of 8 drives per object by default which is plenty in any practical scenario.

    /**
     * Field location.
     */
    private InputLocation location;

    /**
     * Field importedFrom.
     */
    private InputLocation importedFrom;

    /**
     * Cached hashCode for performance.
     */
    private volatile int hashCode = 0;

    // ----------------/
    // - Constructors -/
    // ----------------/

    /**
     * Creates a new InputLocation from an API model InputLocation.

   * reduced the available size of the buffer each time a call to read didn't fill up the available
   * space in the buffer completely. In general this is a performance problem since the buffer size
   * is permanently reduced, but with certain Reader implementations it could also cause the buffer
   * size to reach 0, causing an infinite loop.
   */

   * reduced the available size of the buffer each time a call to read didn't fill up the available
   * space in the buffer completely. In general this is a performance problem since the buffer size
   * is permanently reduced, but with certain Reader implementations it could also cause the buffer
   * size to reach 0, causing an infinite loop.
   */

   * 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>

通过 **FastAPI** 你可以获得所有 **Starlette** 的特性 ( FastAPI 就像加强版的 Starlette )：

* 令人惊叹的性能。它是 <a href="https://github.com/encode/starlette#performance" class="external-link" target="_blank">Python 可用的最快的框架之一，和 **NodeJS** 及 **Go** 相当</a>。
* **支持 WebSocket** 。
* **支持 GraphQL** 。
* 后台任务处理。
* Startup 和 shutdown 事件。
* 测试客户端基于 HTTPX。
* **CORS**, GZip, 静态文件, 流响应。