你也可以在 `APIRouter` 上設定 `route_class` 參數：

{* ../../docs_src/custom_request_and_route/tutorial003_py310.py hl[26] *}

在此範例中，`router` 底下的路徑操作會使用自訂的 `TimedRoute` 類別，並在回應中多加上一個 `X-Response-Time` 標頭，標示產生該回應所花費的時間：

   *     changed, this is <i>definitely</i> the first time {@code object} has been added to the
   *     filter. If the bits haven't changed, this <i>might</i> be the first time {@code object} has
   *     been added to the filter. Note that {@code put(t)} always returns the <i>opposite</i>
   *     result to what {@code mightContain(t)} would have returned at the time it is called.

- **Apps**
  - [alpha] Introducing 'ScheduledJobs', which allow running time based Jobs, namely once at a specified time or repeatedly at specified point in time. ([docs](http://kubernetes.io/docs/user-guide/scheduled-jobs/)) ([kubernetes/features#19](https://github.com/kubernetes/enhancements/issues/19))
- **Auth**

            mac.update(data, offset, length);
            final byte[] cmp = new byte[SIGNATURE_LENGTH];
            System.arraycopy(mac.doFinal(), 0, cmp, 0, SIGNATURE_LENGTH);

            // Use constant-time comparison to prevent timing attacks
            if (!MessageDigest.isEqual(sig, cmp)) {
                return false; // Signature verification failed
            }
            return true; // Signature verification succeeded

        }

        // Start all threads at once
        startLatch.countDown();

        // Wait for completion
        assertTrue(doneLatch.await(5, TimeUnit.SECONDS), "Threads did not complete in time");
        executor.shutdown();

        // Verify hash is not null
        byte[] hash = transport.getPreauthIntegrityHash();
        assertNotNull(hash);

        // Verify hash is a copy, not the original

    public String sortOrder;

    /** Search/filter parameter for duplicate host creator. */
    public String createdBy;

    /** Search/filter parameter for duplicate host creation time. */
    public String createdTime;

    /** Search/filter parameter for duplicate host version number. */
    public String versionNo;

    /**
     * Creates a new DuplicateHostPager with default values.

 * supported. Null keys and values are supported.
 *
 * <p>{@code containsKey(k)}, {@code put(k, v)} and {@code remove(k)} are all (expected and
 * amortized) constant time operations. Expected in the hashtable sense (depends on the hash
 * function doing a good job of distributing the elements to the buckets to a distribution not far

        <field>
          <name>offline</name>
          <version>1.0.0+</version>
          <required>false</required>
          <description>
            Indicate whether maven should operate in offline mode full-time.
          </description>
          <type>boolean</type>
          <defaultValue>false</defaultValue>
        </field>
        <field xdoc.separator="blank">
          <name>proxies</name>

    }

    private final Map<String, Integer> batchLimits = new HashMap<>();

    /** Local process ID for SMB messages */
    protected int localPid = -1;
    /** Local timezone for time calculations */
    protected TimeZone localTimeZone;
    /** Secure random generator for cryptographic operations */
    protected SecureRandom random;
    /** Whether to use command batching for improved performance */

<img src="/img/tutorial/bigger-applications/image01.png">

## Include the same router multiple times with different `prefix` { #include-the-same-router-multiple-times-with-different-prefix }

You can also use `.include_router()` multiple times with the *same* router using different prefixes.