// that thread's queue, and thus we cannot be replacing a TaskAndThread object that would
      // otherwise have another task queued on to it. Note the exception to this, cancellation, is
      // specially handled in execute() - execute() calls triggered by cancellation are no-ops, and
      // thus don't count.
      requireNonNull(sequencer).latestTaskQueue = executingTaskQueue;
      sequencer = null;
      try {

И мы, как разработчики, продолжаем улучшать код — находим баги и добавляем новые возможности (иногда добавляя новые баги 😅).

### Небольшие ошибки обрабатываются автоматически { #small-errors-automatically-handled }

Создавая веб‑API с FastAPI, если в нашем коде возникает ошибка, FastAPI обычно «локализует» её в пределах одного запроса, который эту ошибку вызвал. 🛡

   * limits, this call may be executed well before processing the request is able to begin.
   *
   * This will be invoked only once for a single [Call]. Retries of different routes or redirects
   * will be handled within the boundaries of a single [callStart] and [callEnd]/[callFailed] pair.
   */
  open fun callStart(call: Call) {
  }

  /**

        VersionRange mergedRange = range1.restrict(range2);
        // TODO current policy is to retain the original version - is this correct, do we need strategies or is that
        // handled elsewhere?
        //        assertEquals( "1.1", mergedRange.getRecommendedVersion().toString(), CHECK_VERSION_RECOMMENDATION );

    protected boolean allowGuestFallback = false;
    /** Whether to use durable handles for improved reliability */
    protected boolean useDurableHandles = true;
    /** Whether to use persistent handles for maximum reliability */
    protected boolean usePersistentHandles = false;
    /** Timeout for durable handles in milliseconds */
    protected long durableHandleTimeout = 120000; // 2 minutes

        PooledObject<TestComponent> pooledObject = new DefaultPooledObject<>(null);

        // Should handle null object gracefully
        factory.destroyObject(pooledObject);
        // If we get here without exception, it's handled correctly
        assertTrue(true);
    }

    /**
     * Test destroyObject called multiple times on same object
     */

        try {
            // Create RPC handle to witness service
            this.handle = DcerpcHandle.getHandle(
                "ncacn_ip_tcp:" + serverAddress.getHostAddress() + "[135]",
                WITNESS_INTERFACE_UUID,
                WITNESS_INTERFACE_VERSION,
                context
            );
            
            // Bind to witness interface
            handle.bind();
            

müssen sicherstellen, dass es sich um einen einzelnen Prozess handelt, der die Vorab-Schritte ausführt, *auch* wenn Sie anschließend **mehrere Prozesse** (mehrere Worker) für die Anwendung selbst starten. Wenn diese Schritte von **mehreren Prozessen** ausgeführt würden, würden diese die Arbeit **verdoppeln**, indem sie sie **parallel** ausführen, und wenn es sich bei den Schritten um etwas Delikates wie eine Datenbankmigration handelt, könnte das miteinander Konflikte verursachen.

Natürlich...

      // that thread's queue, and thus we cannot be replacing a TaskAndThread object that would
      // otherwise have another task queued on to it. Note the exception to this, cancellation, is
      // specially handled in execute() - execute() calls triggered by cancellation are no-ops, and
      // thus don't count.
      requireNonNull(sequencer).latestTaskQueue = executingTaskQueue;
      sequencer = null;
      try {

### Errores Pequeños Manejados Automáticamente { #small-errors-automatically-handled }

Al construir APIs web con FastAPI, si hay un error en nuestro código, FastAPI normalmente lo contiene al request único que desencadenó el error. 🛡