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. 🤓

Bạn nên thêm các bài kiểm tra (tests) cho ứng dụng của bạn.

Với **FastAPI** điều này rất dễ dàng (nhờ vào Starlette), kiểm tra tài liệu: [Testing](../tutorial/testing.md){.internal-link target=_blank}

Sau khi bạn có các bài kiểm tra, bạn có thể nâng cấp phiên bản **FastAPI** lên một phiên bản mới hơn, và đảm bảo rằng tất cả mã của bạn hoạt động đúng bằng cách chạy các bài kiểm tra của bạn.

//
//msgp:tuple VolInfo
type VolInfo struct {
	// Name of the volume.
	Name string

	// Date and time when the volume was created.
	Created time.Time

	// total VolInfo counts
	count int

	// Date and time when the volume was deleted, if Deleted
	Deleted time.Time
}

// FilesInfo represent a list of files, additionally
// indicates if the list is last.
//
//msgp:tuple FileInfo

   * 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.

	disk StorageAPI    `msg:"-"`
	mu   *sync.RWMutex `msg:"-"`

	ID         string
	PoolIndex  int
	SetIndex   int
	DiskIndex  int
	Path       string
	Endpoint   string
	Started    time.Time
	LastUpdate time.Time

	ObjectsTotalCount uint64
	ObjectsTotalSize  uint64

	ItemsHealed uint64
	ItemsFailed uint64

	BytesDone   uint64
	BytesFailed uint64

	// Last object scanned.

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"testing"
	"time"
)

func TestVersion(t *testing.T) {
	Version = "2017-05-07T06:37:49Z"
	_, err := time.Parse(time.RFC3339, Version)
	if err != nil {
		t.Fatal(err)
	}

func Test_metaCacheEntries_resolve(t *testing.T) {
	baseTime, err := time.Parse("2006/01/02", "2015/02/25")
	if err != nil {
		t.Fatal(err)
	}
	inputs := []xlMetaV2{
		0: {
			versions: []xlMetaV2ShallowVersion{
				{header: xlMetaV2VersionHeader{
					VersionID: [16]byte{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
					ModTime:   baseTime.Add(30 * time.Minute).UnixNano(),
					Signature: [4]byte{1, 1, 1, 1},

        }
    }

    /**
     * Encrypt using AES-GCM with constant-time operations
     */
    private EncryptionResult encryptWithGCM(byte[] message, byte[] nonce, byte[] associatedData) throws Exception {
        final Cipher cipher = createGCMCipher(true, nonce);
        cipher.updateAAD(associatedData);

        // Use constant-time encryption
        final byte[] encrypted = performConstantTimeEncryption(cipher, message);

	}

	type Author struct {
		ID          string
		Name        string
		Email       string
		Age         int
		Content     Content
		ContentPtr  *Content
		Birthday    time.Time
		BirthdayPtr *time.Time
	}

	type HNPost struct {
		*BasePost
		Upvotes int32
		*Author `gorm:"EmbeddedPrefix:user_"` // Embedded struct
	}

	DB.Migrator().DropTable(&HNPost{})

}

func waitForLowIO(maxIO int, maxWait time.Duration, currentIO func() int) {
	// No need to wait run at full speed.
	if maxIO <= 0 {
		return
	}

	const waitTick = 100 * time.Millisecond

	tmpMaxWait := maxWait

	for currentIO() >= maxIO {
		if tmpMaxWait > 0 {
			if tmpMaxWait < waitTick {
				time.Sleep(tmpMaxWait)
				return
			}
			time.Sleep(waitTick)
			tmpMaxWait -= waitTick
		}