Наприклад, Ви можете додати власний заголовок `X-Process-Time`, який міститиме час у секундах, який витратився на обробку запиту та генерацію відповіді:

{* ../../docs_src/middleware/tutorial001.py hl[10,12:13] *}


/// tip | Підказка

import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.isNull;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyNoMoreInteractions;
import static org.mockito.Mockito.when;

import java.lang.reflect.Method;
import java.util.Arrays;

			tm, err := time.Parse(time.RFC3339Nano, string(val))
			if err == nil {
				j.DeleteMarker.MetaSys[ReservedMetadataPrefixLower+ReplicationTimestamp] = []byte(tm.UTC().Format(time.RFC3339Nano))
			}
		}
		if val, ok := j.DeleteMarker.MetaSys[ReservedMetadataPrefixLower+ReplicaTimestamp]; ok {
			tm, err := time.Parse(time.RFC3339Nano, string(val))
			if err == nil {

	// Copy request.
	req := *r

	// Save authorization header.
	v4Auth := req.Header.Get(xhttp.Authorization)

	// Parse signature version '4' header.
	signV4Values, errCode := parseSignV4(v4Auth, globalSite.Region(), serviceS3)
	if errCode != ErrNone {
		return cred, "", "", time.Time{}, errCode
	}

	// Payload streaming.

          <execution>
            <id>default-compile</id>
            <configuration>
              <excludes>
                <!-- Yes, we want to exclude ForceGuavaCompilation 4 times: -->
                <!-- (And we might as well exclude DummyJavadocClass 3 times (though it would be harmless to include).) -->
                <!-- 1. Don't compile it (since that requires a *non-test* dep on gwt-user. -->

Por ejemplo, podrías añadir un custom header `X-Process-Time` que contenga el tiempo en segundos que tomó procesar la request y generar una response:

{* ../../docs_src/middleware/tutorial001.py hl[10,12:13] *}

/// tip | Consejo

Aquí usamos <a href="https://docs.python.org/3/library/time.html#time.perf_counter" class="external-link" target="_blank">`time.perf_counter()`</a> en lugar de `time.time()` porque puede ser más preciso para estos casos de uso. 🤓

   * returns the expected data.
   *
   * @throws Throwable if the listener isn't called or if it resulted in a throwable or if the
   *     result doesn't match the expected value.
   */
  public void assertSuccess(Object expectedData) throws Throwable {
    // Verify that the listener executed in a reasonable amount of time.

          .url(server!!.url("/"))
          .build(),
      )
    assertFailsWith<IOException> {
      call.execute()
    }.also { expected ->
      assertThat(expected.message).isIn("timeout", "Read timed out")
    }
    assertThat(listener.recordedEventTypes()).containsExactly(
      "ConnectStart",
      "ConnectEnd",
      "ConnectionAcquired",
      "NoNewExchanges",
      "ConnectionReleased",

        int expected =
            force32(aUnsigned.bigIntegerValue().multiply(bUnsigned.bigIntegerValue()).intValue());
        UnsignedInteger unsignedMul = aUnsigned.times(bUnsigned);
        assertWithMessage(aUnsigned + " * " + bUnsigned)
            .that(unsignedMul.intValue())
            .isEqualTo(expected);
      }
    }
  }

  public void testDividedBy() {

   * note that the execution order of all listeners is ultimately chosen by the implementations of
   * the supplied executors.
   *
   * <p>This method is idempotent. Calling it several times in parallel is semantically equivalent
   * to calling it exactly once.
   *
   * @since 10.0 (present in 1.0 as {@code run})
   */
  public void execute() {